Radeon HD 7990 vs Radeon RX 6800
The Radeon HD 7990 is much slower than the Radeon RX 6800 on average across 100+ games and it's also a much worse value for money, as it's $150.00 more expensive!
FPS Comparison Across Popular Games
Predicted average FPS at 1080p, 1440p, and 4K, based on real game benchmarks.
Specs & Benchmark Comparison
Side-by-side specs, synthetic benchmarks, and key hardware differences.
FP32 Computehelp
Radeon RX 6800 has 295% more compute power.
Pixel Fillratehelp
Radeon RX 6800 fills pixels 532% faster.
Texture Fillratehelp
Radeon RX 6800 maps textures 295% faster.
Memory Bandwidthhelp
Radeon RX 6800 moves data 78% faster.
GDDR5
Memory Typehelp
GDDR6384-bit
Memory Bushelp
256-bitSouthern Islands (HD 7900)
Generationhelp
Navi II (RX 6000)Desktop
Segmenthelp
Desktop-
Power Connectorshelp
--
Outputshelp
-Frequently Asked Questions
compare_arrowsWhich is better, Radeon HD 7990 or Radeon RX 6800?expand_more
The Radeon RX 6800. It's 750% faster than the Radeon HD 7990 on average across 100+ games, scoring 34/100 vs 4/100 in our gaming rating.
speedHow much faster is Radeon RX 6800 than Radeon HD 7990?expand_more
750% faster on average. The gap varies by game and resolution, check the per-game FPS comparison above.
aspect_ratioWhich is better for 1440p and 4K gaming, Radeon HD 7990 or Radeon RX 6800?expand_more
The Radeon RX 6800 is faster at both resolutions. At 4K, VRAM matters more, check the specs section to compare memory. Toggle the resolution selector above to see per-game FPS.
paidIs the Radeon RX 6800 worth buying in 2026?expand_more
It scores 34/100 in our gaming rating, faster than most GPUs on the market. Good buy if the price is right.
differenceWhat is the difference between Radeon HD 7990 and Radeon RX 6800?expand_more
Performance: Radeon HD 7990 scores 4/100, Radeon RX 6800 scores 34/100. They also differ in VRAM, memory bandwidth, power draw, and compute performance. Full breakdown in the specs section above.
compressWill the Radeon HD 7990 or Radeon RX 6800 bottleneck my PC?expand_more
Depends on the rest of your build, especially your CPU. Swap the paired CPU in the FPS section above to see if it limits performance, or use our bottleneck calculator for a full analysis.
upgradeIs it worth upgrading to the Radeon HD 7990 or Radeon RX 6800?expand_more
The Radeon RX 6800 is the stronger pick at 34/100. Compare your current GPU against it to see the exact FPS gain across 100+ games.
memoryDoes VRAM matter when comparing the Radeon HD 7990 and Radeon RX 6800?expand_more
Yes, more VRAM helps at higher resolutions and in modded games. Check the specs section above to compare memory capacity and bandwidth between both GPUs.
Popular Comparisons
HD 7990 vs RX 9070HD 7990 vs RX 9060 XT 16 GBRTX 5070 vs HD 7990HD 7990 vs RX 9070 XTRTX 5060 vs HD 7990RTX 5080 vs HD 7990Arc B580 vs HD 7990Arc A310 vs HD 7990RTX 5060 Ti vs HD 7990Arc A580 vs HD 7990Arc A750 vs HD 7990RTX 5070 Ti vs HD 7990HD 7990 vs R7 GraphicsHD 7990 vs RX 580GTX 1660 SUPER vs HD 7990HD 7990 vs R5 GraphicsHD 7990 vs RX 560RTX 5090 vs HD 7990RTX 4090 vs HD 7990HD 7990 vs RX 6900 XTHD 7990 vs RX 7900 XTXHD 7990 vs Pro W5500HD 7990 vs Pro W5700HD 7990 vs R7 240HD 7990 vs R7 250Arc B570 vs HD 7990RX 6800 vs RX 9070RX 6800 vs RX 9060 XT 16 GBRTX 5070 vs RX 6800RX 6800 vs RX 9070 XTRTX 5060 vs RX 6800RTX 5080 vs RX 6800Arc B580 vs RX 6800Arc A310 vs RX 6800RTX 5060 Ti vs RX 6800Arc A580 vs RX 6800Arc A750 vs RX 6800RTX 5070 Ti vs RX 6800R7 Graphics vs RX 6800RX 580 vs RX 6800GTX 1660 SUPER vs RX 6800R5 Graphics vs RX 6800RX 560 vs RX 6800RTX 5090 vs RX 6800RTX 4090 vs RX 6800RX 6800 vs RX 6900 XTRX 6800 vs RX 7900 XTXPro W5500 vs RX 6800Pro W5700 vs RX 6800R7 240 vs RX 6800R7 250 vs RX 6800Arc B570 vs RX 6800