Quadro CX vs Radeon HD 6990

If you are going to buy a new graphics card and are choosing between Quadro CX and Radeon HD 6990, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Quadro CX stacks up against Radeon HD 6990, check out specs charts below.

Main Specs

  Quadro CX Radeon HD 6990
Power consumption (TDP) 150 Watt 375 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin 2x 8-pin
Memory type GDDR3 GDDR5
Maximum RAM amount 1536 MB 2 GB
Display Connectors 1x DVI, 2x DisplayPort, 1x S-Video 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 6990 has 150% more power consumption, than Quadro CX.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Quadro CX has 1534 GB more memory, than Radeon HD 6990.
  • Both cards are used in Desktops.
  • Quadro CX is build with Tesla 2.0 architecture, and Radeon HD 6990 - with TeraScale 3.
  • Core clock speed of Radeon HD 6990 is 228 MHz higher, than Quadro CX.
  • Quadro CX is manufactured by 55 nm process technology, and Radeon HD 6990 - by 40 nm process technology.
  • Radeon HD 6990 is 28 mm longer, than Quadro CX.
  • Memory clock speed of Radeon HD 6990 is 3400 MHz higher, than Quadro CX.

Game benchmarks

high / 1080p 1−2 14−16
ultra / 1080p 0−1 9−10
QHD / 1440p 0−1 3−4
low / 720p 10−12 30−35
medium / 1080p 2−3 18−20
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 340% more, than Quadro CX.

Full Specs

  Quadro CX Radeon HD 6990
Architecture Tesla 2.0 TeraScale 3
Code name GT200B Antilles
Type Workstation Desktop
Release date 11 November 2008 8 March 2011
Pipelines 192 1536
Core clock speed 602 MHz 830 MHz
Transistor count 1,400 million 2,640 million
Manufacturing process technology 55 nm 40 nm
Texture fill rate 38.53 79.68
Floating-point performance 462.3 gflops 2x 2,549.8 gflops
Length 267 mm 295 mm
Memory bus width 384 Bit 256 Bit
Memory clock speed 1600 MHz 5000 MHz
Memory bandwidth 76.8 GB/s 160.0 GB/s
DirectX 11.1 (10_0) 11.2 (11_0)
Shader Model 4.0 5.0
OpenGL 3.3 4.4
OpenCL 1.1 1.2
Vulkan N/A N/A
CUDA 1.3
Bitcoin / BTC (SHA256) 265 Mh/s
Ethereum / ETH (DaggerHashimoto) 24 Mh/s
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