GeForce GTX 660 Ti vs Radeon HD 7950

If you are going to buy a new graphics card and are choosing between GeForce GTX 660 Ti and Radeon HD 7950, 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 GeForce GTX 660 Ti stacks up against Radeon HD 7950, check out specs charts below.

Main Specs

  GeForce GTX 660 Ti Radeon HD 7950
Power consumption (TDP) 150 Watt 200 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors Two 6-pin 2x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 3 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 1x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 7950 has 33% more power consumption, than GeForce GTX 660 Ti.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon HD 7950 has 1 GB more memory, than GeForce GTX 660 Ti.
  • Both cards are used in Desktops.
  • GeForce GTX 660 Ti is build with Kepler architecture, and Radeon HD 7950 - with GCN 1.0.
  • GeForce GTX 660 Ti and Radeon HD 7950 are manufactured by 28 nm process technology.
  • Radeon HD 7950 is 258 mm longer, than GeForce GTX 660 Ti.
  • Memory clock speed of Radeon HD 7950 is 1244 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks

high / 1080p 21−24 35−40
ultra / 1080p 12−14 21−24
QHD / 1440p 8−9 16−18
4K / 2160p 5−6 10−11
low / 720p 40−45 60−65
medium / 1080p 27−30 40−45
The average gaming FPS of Radeon HD 7950 in Assassin's Creed Odyssey is 60% more, than GeForce GTX 660 Ti.

Full Specs

  GeForce GTX 660 Ti Radeon HD 7950
Architecture Kepler GCN 1.0
Code name GK104 Tahiti
Type Desktop Desktop
Release date 16 August 2012 31 January 2012
Pipelines 1344 1792
Core clock speed 915 MHz
Boost Clock 980 MHz 1250 MHz
Transistor count 3,540 million 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 102.5 billion/sec 89.60
Floating-point performance 2,459.5 gflops 2,867 gflops
Length 9.5" (24.1 cm) 267 mm
Memory bus width 192-bit GDDR5 384 Bit
Memory clock speed 6.0 GB/s 1250 MHz
Memory bandwidth 144.2 GB/s 240 GB/s
Shared memory -
DirectX 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.3 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126
CUDA +
Monero / XMR (CryptoNight) 0.56 kh/s
FreeSync +
CUDA cores 1344
Bus support PCI Express 3.0 PCIe 3.0 x16
Height 4.376" (11.1 cm)
SLI options +
Multi monitor support 4 displays
HDMI + +
HDCP +
Maximum VGA resolution 2048x1536
Audio input for HDMI Internal
3D Blu-Ray +
3D Gaming +
3D Vision +
Bitcoin / BTC (SHA256) 99 Mh/s 381 Mh/s
Eyefinity +
PowerTune +
ZeroCore +
Design reference
Number of Eyefinity displays 6
CrossFire +
Decred / DCR (Decred) 0.78 Gh/s
Ethereum / ETH (DaggerHashimoto) 13.86 Mh/s
Zcash / ZEC (Equihash) 250 Sol/s
Compute units 28
AppAcceleration +
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