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AMD CrossFire

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292: 276: 284: 259:" motherboard chipset, the "master" card is no longer required for every "CrossFire Ready" card (with the exception of the Radeon X1900 series). With the CrossFire Xpress 3200, two normal cards can be run in a Crossfire setup, using the PCI Express bus for communications. This is similar to X1300 CrossFire, which also uses PCI Express, except that the Xpress 3200 had been built for low-latency and high-speed communication between graphics cards. While performance was impacted, this move was viewed as an overall improvement in market strategy, because Crossfire Master cards were expensive, in high demand, and largely unavailable at the retail level. 506:
increased performance. With the latest generation cards, they will only crossfire with other cards in their sub series. For example, GPU in the same series can be crossfired with each other. So a 5800 series GPU (e.g. a 5830) can run together with another 5800 series GPU (e.g. 5870). However, GPUs not in the same hundred series cannot be crossfired successfully (e.g. a 5770 cannot run with a 5870). The only exception is that the HD 7870 XT cards can be used with a HD 7900 series GPU (e.g., a 7950) in a crossfire configuration because they feature the same GPU.
52: 300: 541: 311: 367: 211:, x850s, x1800s and x1900s came in a regular edition, and a "CrossFire Edition" which has "master" capability built into the hardware. "Master" capability is a term used for 5 extra image compositing chips, which combine the output of both cards. One had to buy a Master card, and pair it with a regular card from the same series. The Master card shipped with a proprietary 505:
CrossFire can be implemented with GPU cards of the same generation, and manufacture (this is compared to Nvidia's SLI, which generally only works if all cards have the same GPU, and brand). This allows buyers who have varying budgets over time to purchase different cards and still get the benefits of
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In some cases CrossFire doesn't improve 3D performance – in some extreme cases, it can lower the framerate due to the particulars of an application's coding. This is also true for Nvidia's SLI, as the problem is inherent in multi-GPU systems. This is often witnessed when running an application at low
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Although the CrossFire Xpress 3200 chipset is indeed capable of CrossFire through the PCI Express bus for every Radeon series below the X1900s, the driver accommodations for this CrossFire method have not yet materialized for the X1800 series. ATI has said that future revisions of the Catalyst driver
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AMD CrossFire, and SLI configurations can run many monitors of varying size and resolutions. Both SLI, and CrossFire setups only allow up to four 8K (7680x4320) monitors, or eight 4K monitors (3840x2160). Each monitor requires its own dedicated graphics card (except for 4K, and standard HD), in that
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An earlier CrossFireX and chipset compatibility chart is shown here: The latest compatibility charts, as of April 2014, shows AMD 890, 990 and A75 chipsets—and many Intel chipsets including Z68 and X79 chipsets—as being compatible with CrossFireX; they also show which GPU cards may be paired with an
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and also applies to SLI since it is inherent to multi-GPU configurations. AMD CrossFireX, and NVIDIA SLI setups both require bridges, and a power supply unit (PSU) capable of supplying enough power to the GPUs. 6 pin (75 watt 3+3, becoming rare now), 8 pin (150 watt 4+4), and 16 pin (300 watt 8+8)
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A later development to the CrossFire infrastructure includes a dual GPUs with on-board PCI Express bridge that was released in early 2008, the Radeon HD 3870 X2 and later in Radeon HD 4870 X2 graphics cards, featuring only one CrossFire connector for dual card, four GPU scalability. When using two
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monitors. As many people found a 60 Hz refresh rate with a CRT to strain one's eyes, the practical resolution limit became 1280Ă—1024, which did not push CrossFire enough to justify the cost. The next generation of CrossFire, as employed by the X1800 Master cards, used two sets of compositing
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bridges, but different in physical and logical natures. As such, Master Cards no longer exist, and are not required for maximum performance. Two dongles can be used per card; these were put to full use with the release of CrossFireX. Radeon HD 2900 and HD 3000 series cards use the same ribbon
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lanes provide up to 17.5 times higher bandwidth (15.754 GB/s for a Ă—16 slot) when compared to current external bridges (900 MB/s), rendering the use of a CrossFire bridge unnecessary. Thus, XDMA was selected for greater GPU interconnection bandwidth demands generated by
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applications, AMD has the mGPU (also known as multi-GPU) branding, with the difference being that software developers must create mGPU compatible profiles for their applications where before AMD created the profiles for DirectX 11 applications.
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connectors, but the HD 3800 series of cards only require one ribbon connector, to facilitate CrossFireX. Unlike older series of Radeon cards, different HD 3800 series cards can be combined in CrossFireX, each with separate clock control.
330:/Master card and slave card configurations for CrossFire to operate. ATI's CrossFire connector (CrossFire Bridge Interconnect, or CFBI link) is now a ribbon-like connector attached to the top of each graphics adapter, similar to nVidia's 358:
external bridge (HD 7750, HD 5750, HD 4350, HD 4550, HD 4650, HD 4670 cards may be paired without an external bridge, though the charts also indicate that some models manufactured by other than AMD may still require the bridge).
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This combination results in power-savings when simple or 2D graphics are used and performance increases of 25% to over 200% in 3D graphics over using a non CrossFire option. As of March 2012, it appears that this is now called
492:, the subjective framerate can often be lower than the framerate reported by benchmarking applications, and may even be poorer than the frame rate of its single-GPU equivalent. This phenomenon is known as 234:
An example of a limitation in regard to a Master-card configuration would be the first-generation CrossFire implementation in the Radeon X850 XT Master Card. Because it used a compositing chip from
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monitors. Bandwidth of the data channel opened by XDMA is fully dynamic, scaling itself together with the demands of the game being played, as well as adapting to advanced user settings such as
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architecture with select graphic cards, for increased performance. The current generation is called Hybrid CrossFireX and is available for motherboards with integrated AMD chipsets in the
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architecture. For example, an R9-280X card can be used in a CrossFireX setup together with a HD 7970 card, largely due to them being the same product at different clock rates.
238:(SiI 163B TMDS), the maximum resolution on an X850 CrossFire setup was limited to 1600Ă—1200 at 60 Hz, or 1920Ă—1440 at 52 Hz. This was considered a problem for 529:
to operate in CrossFire mode due to the PCI Express bus not being able to provide enough bandwidth to run CrossFire without losing a significant amount of performance.
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chips and a custom double density dual-link DVI Y-dongle to double the bandwidth between cards, raising the maximum resolution and refresh rate to far higher levels.
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to open a direct channel of communication between the multiple GPUs in a system, operating over the same PCI Express bus which is used by AMD Radeon graphics cards.
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Major downside of CrossFire is that it works only in fullscreen mode, requiring extrinsic support for software or games when run in borderless/windowed mode.
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cable. This dongle serves as the main link between both cards, sending incomplete images between them, and complete images to the monitor. Low-end Radeon
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desktop platform from AMD on November 19, 2007, the CrossFire setup has been updated with support for a maximum of four video cards with the
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offers some MIT-licensed source-code for DirectGMA applications with multiple AMD GPUs in conjunction with Direct3D 11, OpenGL and OpenCL:
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The CrossFire brand name was retired by AMD in September 2017, however the company continues to develop and support the technology for
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cards to be set up in a CrossFire configuration. The "slave" graphics card needed to be from the same family as the "master".
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and x1600 cards have no "CrossFire Edition" but are enabled via software, with communication forwarded via the standard
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CrossFire was first made available to the public on September 27, 2005. The system required a CrossFire-compliant
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GPU), ATI has completely revised CrossFire's connection infrastructure to further eliminate the need for past Y-
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GPUs on board the same system, the HDMI ports on the GPUs cannot both work at the same time.
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owners wishing to use CrossFire to play games at high resolutions, or owners of Widescreen
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There is also a "hybrid" mode of CrossFireX that combines on-board graphics using the AMD
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CrossFire implementations (the Radeon X800 to X1900 series) require an external y-cable/
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The Radeon R9 290 and R9 290X graphics cards (released on October 24, 2013 and based on
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Associated technology used in mobile computers with external graphics cards, such as in
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XDMA might be similar the AMD DirectGMA (Direct Graphics Memory Access) to be found on
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slots on the motherboard. ATI currently has not created the infrastructure to allow
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Y-dongle, which plugged into the primary DVI ports on both cards, and into the
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to be used in a single computer to improve graphics performance.
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case up to two monitors can be on one dedicated graphics card.
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An example of CrossFire usage, with two Radeon HD 7870 cards.
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Kreiss, Tino; Töpelt, Bert; Schuhmann, Daniel (2005-12-02).
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Additionally, some newer cards are capable of pairing with
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https://github.com/GPUOpen-LibrariesAndSDKs/DirectGMA_P2P
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power plugs are all common in today's graphics cards.
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CrossFire, but has not yet mentioned a specific date.
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Archived from 606: 374:, and Radeon Pro branded product lines. 41:Brand name by AMD; multi-GPU technology 790:"CrossFire Xpress 3200: RD580 for AM2" 303:AMD CrossFireX and some R700 GPUs, in 251:Second-generation (Software CrossFire) 43: 522: 7: 769:"Computer Hardware Reviews and News" 1108:Mujtaba, Hassan (10 October 2013). 722:"ATI Launches Crossfire... Finally" 338:Since the release of the codenamed 156:. The technology allows up to four 878:Laird, Jeremy (19 November 2007). 25: 1726:Current technologies and software 959:"Radeon R9 290X | VideoCardz.com" 429:Hybrid CrossFireX (dual graphics) 1373:. HardwareHeaven. Archived from 1179:Triple Hybrid CrossfireX working 539: 255:When used with ATI's "CrossFire 144:) is a brand name for the multi- 1407:Hardocp.com's CrossFire preview 1158:"ATI CrossFireX | GAME.AMD.COM" 993:. Community.amd.com. 2014-01-03 930:"Crossfire Compatibility Chart" 1235:Toepelt, Bert (4 March 2008). 1213:Bell, Brandon (4 March 2008). 907:. Game.Amd.Com. Archived from 207:(PCIe) graphics cards. Radeon 1: 1327:Raffael Vötter (2008-02-08). 1088:The AMD Radeon R9 290X Review 750:. The Tech Report. 2005-09-26 271:Third-generation (CrossFireX) 1014:. Tom's Hardware. 2013-10-01 1743:Unified Video Decoder (UVD) 1525:Vertex and fragment shaders 1132:"Combination Options Chart" 1084:"XDMA: Improving Crossfire" 471:together with video cards. 467:" and means using A-series 2184: 1331:. PC Games Hardware Online 1280:"AMD Radeon Dual Graphics" 1259:"AMD Radeon Dual Graphics" 1090:. anandtech.com. p. 4 1057:Joel Hruska (2014-09-02). 860:. bit-tech.net. 2007-11-30 615:"AMD Crossfire Technology" 580:Comparison of AMD chipsets 575:Comparison of ATI chipsets 488:When using CrossFire with 432: 152:, originally developed by 36:Crossfire (disambiguation) 33: 26: 1965: 1960:Other brands and products 1954: 1748:Video Coding Engine (VCE) 1731: 1720: 1488: 1455: 1082:Ryan Smith (2013-10-23). 677:. IDG Communications, Inc 475:Comparisons to Nvidia SLI 49: 1736:Audio/Video acceleration 465:AMD Radeon Dual Graphics 403:vertical synchronization 362:Fourth generation (XDMA) 318:With the release of the 167:or notebooks, is called 560:Scalable Link Interface 397:, and more recently by 1618:Unified shaders & 375: 315: 307: 296: 288: 280: 150:Advanced Micro Devices 1753:Video Core Next (VCN) 1480:APU features template 1472:GPU features template 1282:. Amd.com. 2013-10-11 1261:. Amd.com. 2013-10-11 905:"Compatibility Chart" 771:. Hardocp. 2005-09-26 369: 313: 305:Radeon HD 4000 series 302: 294: 286: 278: 93:AMD Chipset Series ( 34:For other uses, see 1854:AMD Radeon Software 1192:"AMD 790GX Chipset" 728:. 26 September 2005 651:on 29 November 2014 555:ATI Multi Rendering 435:AMD Hybrid Graphics 200:with a pair of ATI 169:AMD Hybrid Graphics 46: 376: 316: 308: 297: 289: 281: 178:applications. 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1231: 1228: 1216: 1209: 1206: 1193: 1187: 1184: 1180: 1175: 1172: 1159: 1153: 1150: 1137: 1133: 1127: 1124: 1111: 1104: 1101: 1089: 1085: 1078: 1075: 1064: 1060: 1053: 1050: 1039:on 2013-10-11 1038: 1034: 1028: 1025: 1013: 1007: 1004: 992: 986: 984: 980: 969:on 2018-11-03 968: 964: 960: 954: 951: 940:on 2018-08-01 939: 935: 931: 925: 922: 911:on 2011-01-01 910: 906: 900: 897: 885: 884:techradar.com 881: 874: 871: 859: 853: 850: 838: 832: 829: 817: 813: 806: 803: 791: 785: 782: 770: 764: 761: 749: 743: 740: 727: 723: 717: 714: 702: 698: 692: 689: 676: 672: 666: 663: 650: 646: 642: 636: 633: 620: 616: 610: 607: 601: 596: 593: 591: 588: 586: 583: 581: 578: 576: 573: 571: 568: 566: 565:Intel Xe Link 563: 561: 558: 556: 553: 552: 548: 542: 537: 532: 530: 528: 524: 519: 514:Disadvantages 513: 511: 507: 500: 498: 495: 491: 486: 485:resolutions. 479: 474: 472: 470: 466: 460: 458: 454: 450: 446: 442: 436: 428: 426: 425: 421: 417: 415: 412:based on the 411: 406: 404: 400: 399:4K resolution 396: 395:AMD Eyefinity 391: 387: 385: 381: 373: 368: 361: 359: 355: 351: 349: 345: 344:790FX chipset 341: 336: 333: 329: 325: 321: 312: 306: 301: 293: 285: 277: 270: 268: 266: 260: 258: 250: 248: 245: 241: 237: 236:Silicon Image 232: 230: 226: 222: 218: 214: 210: 206: 203: 199: 191: 186: 184: 181: 177: 172: 170: 166: 161: 159: 155: 151: 147: 143: 139: 138:AMD CrossFire 127: 124: 122: 119: 117: 114: 112: 109: 107: 104: 102: 99: 98: 96: 92: 90: 87: 86: 85: 81: 78: 74: 70: 67: 64: 60: 53: 48: 45:AMD CrossFire 37: 30: 19: 18:ATI CrossFire 2041:handheld PCs 1971:Workstations 1788: 1559:(after 1999) 1476:List of APUs 1468:List of GPUs 1379:. Retrieved 1375:the original 1365: 1354:. Retrieved 1352:. GameDebate 1344: 1333:. Retrieved 1322: 1311:. Retrieved 1305: 1295: 1284:. Retrieved 1274: 1263:. Retrieved 1253: 1243:23 September 1241:. Retrieved 1230: 1220:23 September 1218:. Retrieved 1208: 1198:22 September 1196:. Retrieved 1186: 1174: 1164:23 September 1162:. Retrieved 1152: 1142:22 September 1140:. Retrieved 1136:the original 1126: 1114:. Retrieved 1103: 1092:. Retrieved 1087: 1077: 1066:. Retrieved 1062: 1052: 1041:. Retrieved 1037:the original 1027: 1016:. Retrieved 1006: 995:. Retrieved 971:. Retrieved 967:the original 962: 953: 942:. Retrieved 938:the original 933: 924: 913:. Retrieved 909:the original 899: 887:. Retrieved 883: 873: 862:. Retrieved 852: 841:. Retrieved 831: 819:. Retrieved 816:bit-tech.net 815: 805: 794:. Retrieved 784: 773:. Retrieved 763: 752:. Retrieved 742: 730:. Retrieved 725: 716: 705:. Retrieved 703:. 2017-09-22 700: 691: 681:23 September 679:. Retrieved 674: 665: 653:. Retrieved 649:the original 644: 635: 623:. Retrieved 618: 609: 520: 517: 508: 504: 487: 483: 480:Similarities 461: 438: 418: 407: 388: 383: 377: 356: 352: 347: 339: 337: 317: 261: 254: 233: 195: 173: 162: 141: 137: 136: 62:Manufacturer 1924:CodeAnalyst 1909:AMD APP SDK 1799:HyperMemory 1112:. WCCF Tech 889:25 November 837:"AnandTech" 821:25 November 792:. AnandTech 732:28 December 675:pcworld.com 655:25 November 645:club-3d.com 570:MultiChrome 441:northbridge 372:AMD FirePro 322:X1950 Pro ( 257:Xpress 3200 225:PCI Express 205:PCI Express 198:motherboard 89:PCI Express 2157:Categories 2134:Steam Deck 2113:Xbox One X 2022:FireStream 1991:Radeon Pro 1381:2014-05-21 1356:2015-06-26 1335:2009-11-03 1313:2007-06-01 1286:2013-10-16 1265:2013-10-16 1116:16 October 1094:2014-02-04 1068:2014-10-13 1043:2013-10-07 1018:2013-10-07 997:2014-02-03 973:2018-11-07 944:2018-11-07 915:2011-01-01 864:2013-10-16 843:2013-10-16 796:2013-10-16 775:2013-10-16 754:2013-10-16 707:2021-04-12 602:References 501:Advantages 433:See also: 265:dongleless 180:DirectX 12 176:DirectX 11 142:CrossFireX 83:Connection 29:CrossfireX 2079:Liverpool 2069:Hollywood 1893:HLSL2GLSL 1789:CrossFire 1784:PowerTune 1774:Eyefinity 1758:TrueAudio 1577:TeraScale 405:(vsync). 2093:Xbox One 2063:Xbox 360 2053:GameCube 2036:Consoles 2005:Obsolete 1914:Catalyst 1902:Obsolete 1840:Software 1779:FreeSync 1450:graphics 726:Slashdot 533:See also 287:Top view 2109:Scorpio 2089:Durango 2049:Flipper 1984:Current 1886:TressFX 1881:GPUOpen 1847:Current 1700:RX 7000 1695:RX 6000 1690:RX 5000 1667:RX Vega 1642:HD 8000 1637:HD 7000 1605:HD 6000 1600:HD 5000 1595:HD 4000 1590:HD 3000 1585:HD 2000 701:PCWorld 625:28 June 619:AMD.com 451:series 420:GPUOpen 217:monitor 165:laptops 2039:& 2017:FireMV 1974:& 1934:CodeXL 1929:Mantle 1871:AMDGPU 1804:HyperZ 1620:memory 1500:Wonder 1474:) and 1464:-brand 1462:Radeon 527:dongle 340:Spider 328:dongle 320:Radeon 229:FireGL 202:Radeon 75:Multi- 2059:Xenos 1194:. AMD 1160:. AMD 621:. AMD 597:(MCM) 324:RV570 221:x1300 209:x800s 126:890GX 116:790GX 1866:ROCm 1859:HD3D 1814:RDNA 1682:RDNA 1552:R500 1547:R400 1542:R300 1537:R200 1532:R100 1510:Rage 1505:Mach 1245:2010 1222:2010 1200:2010 1166:2010 1144:2010 1118:2013 891:2014 823:2014 734:2009 683:2017 657:2014 627:2016 521:The 469:APUs 453:GPUs 447:and 384:XDMA 158:GPUs 121:880G 111:785G 106:780G 101:760G 72:Type 56:Logo 2099:Neo 2073:Wii 1809:HSA 1672:600 1662:500 1657:400 1652:300 1647:200 1629:GCN 1448:AMD 490:AFR 332:SLI 244:LCD 240:CRT 213:DVI 146:GPU 77:GPU 66:AMD 2159:: 1304:. 1086:. 1061:. 982:^ 961:. 932:. 882:. 814:. 724:. 699:. 673:. 643:. 617:. 459:. 171:. 97:) 2115:) 2111:( 2105:) 2101:( 2095:) 2091:( 2085:) 2081:( 2075:) 2071:( 2065:) 2061:( 2055:) 2051:( 1829:4 1824:3 1819:2 1482:) 1478:( 1470:( 1440:e 1433:t 1426:v 1384:. 1359:. 1338:. 1316:. 1289:. 1268:. 1247:. 1224:. 1202:. 1168:. 1146:. 1120:. 1097:. 1071:. 1046:. 1021:. 1000:. 976:. 947:. 918:. 893:. 867:. 846:. 825:. 799:. 778:. 757:. 736:. 710:. 685:. 659:. 629:. 463:" 449:8 445:7 38:. 31:. 20:)

Index

ATI CrossFire
CrossfireX
Crossfire (disambiguation)

AMD
GPU
PCI Express
Hybrid CrossFireX
760G
780G
785G
790GX
880G
890GX
GPU
Advanced Micro Devices
ATI Technologies
GPUs
laptops
AMD Hybrid Graphics
DirectX 11
DirectX 12
motherboard
Radeon
PCI Express
x800s
DVI
monitor
x1300
PCI Express

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