Radeon HD 4850 X2 vs Radeon HD 6990

When comparing Radeon HD 4850 X2 and Radeon HD 6990, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Radeon HD 4850 X2 and Radeon HD 6990 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  Radeon HD 4850 X2 Radeon HD 6990
Power consumption (TDP) 250 Watt 375 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin + 1x 8-pin 2x 8-pin
Memory type GDDR3 GDDR5
Maximum RAM amount 512 MB 2 GB
Display Connectors 4x DVI, 1x S-Video 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 6990 has 50% more power consumption, than Radeon HD 4850 X2.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Radeon HD 4850 X2 has 510 GB more memory, than Radeon HD 6990.
  • Both cards are used in Desktops.
  • Radeon HD 4850 X2 is build with TeraScale architecture, and Radeon HD 6990 - with TeraScale 3.
  • Core clock speed of Radeon HD 6990 is 205 MHz higher, than Radeon HD 4850 X2.
  • Radeon HD 4850 X2 is manufactured by 55 nm process technology, and Radeon HD 6990 - by 40 nm process technology.
  • Radeon HD 6990 is 28 mm longer, than Radeon HD 4850 X2.
  • Memory clock speed of Radeon HD 6990 is 3010 MHz higher, than Radeon HD 4850 X2.

Game benchmarks

high / 1080p 3−4 14−16
ultra / 1080p 2−3 9−10
QHD / 1440p 0−1 3−4
low / 720p 14−16 30−35
medium / 1080p 5−6 18−20
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 216% more, than Radeon HD 4850 X2.

Full Specs

  Radeon HD 4850 X2 Radeon HD 6990
Architecture TeraScale TeraScale 3
Code name R700 Antilles
Type Desktop Desktop
Release date 7 November 2008 8 March 2011
Pipelines 800 1536
Core clock speed 625 MHz 830 MHz
Transistor count 956 million 2,640 million
Manufacturing process technology 55 nm 40 nm
Texture fill rate 25.00 79.68
Floating-point performance 2x 1,000.0 gflops 2x 2,549.8 gflops
Length 267 mm 295 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 1990 MHz 5000 MHz
Memory bandwidth 63.68 GB/s 160.0 GB/s
DirectX 10.1 (10_1) 11.2 (11_0)
Shader Model 4.1 5.0
OpenGL 3.3 4.4
OpenCL 1.1 1.2
Vulkan N/A N/A
Bitcoin / BTC (SHA256) 265 Mh/s
Ethereum / ETH (DaggerHashimoto) 24 Mh/s
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