GeForce GTX 660 Ti vs Radeon HD 7770

When comparing GeForce GTX 660 Ti and Radeon HD 7770, 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 GeForce GTX 660 Ti and Radeon HD 7770 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  GeForce GTX 660 Ti Radeon HD 7770
Power consumption (TDP) 150 Watt
Interface PCIe 3.0 x16
Supplementary power connectors Two 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 660 Ti and Radeon HD 7770 have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • GeForce GTX 660 Ti is build with Kepler architecture, and Radeon HD 7770 - with GCN.
  • Core clock speed of Radeon HD 7770 is 85 MHz higher, than GeForce GTX 660 Ti.
  • GeForce GTX 660 Ti and Radeon HD 7770 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7770 is 4494 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks

high / 1080p 21−24 10−11
ultra / 1080p 12−14 6−7
QHD / 1440p 8−9 1−2
4K / 2160p 5−6
low / 720p 40−45 24−27
medium / 1080p 27−30 12−14
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 109% more, than Radeon HD 7770.

Full Specs

  GeForce GTX 660 Ti Radeon HD 7770
Architecture Kepler GCN
Code name GK104 Cape Verde
Type Desktop Desktop
Release date 16 August 2012 15 February 2012
Pipelines 1344 640
Core clock speed 915 MHz 1000 MHz
Boost Clock 980 MHz
Transistor count 3,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 102.5 billion/sec
Floating-point performance 2,459.5 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 128 Bit
Memory clock speed 6.0 GB/s 4500 MHz
Memory bandwidth 144.2 GB/s
Shared memory - -
DirectX 12 (11_0) DirectX 11.1, Shader 5.1
Shader Model 5.1
OpenGL 4.3
OpenCL 1.2
Vulkan 1.1.126
CUDA +
CUDA cores 1344
Bus support PCI Express 3.0
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 156 Mh/s
Eyefinity +
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