GeForce 945A vs Radeon HD 7770M

If you are going to buy a new graphics card and are choosing between GeForce 945A and Radeon HD 7770M, 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 945A stacks up against Radeon HD 7770M, check out specs charts below.

Radeon HD 7770M is a Laptop Graphics Card

Note: Radeon HD 7770M is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Radeon HD 7770M here:

Main Specs

  GeForce 945A Radeon HD 7770M
Power consumption (TDP) 33 Watt 32 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 1 GB
Display Connectors No outputs No outputs
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  • GeForce 945A has 3% more power consumption, than Radeon HD 7770M.
  • GeForce 945A is connected by PCIe 3.0 x8, and Radeon HD 7770M uses PCIe 2.0 x16 interface.
  • GeForce 945A and Radeon HD 7770M have maximum RAM of 1 GB.
  • GeForce 945A is used in Desktops, and Radeon HD 7770M - in Laptops.
  • GeForce 945A is build with Maxwell architecture, and Radeon HD 7770M - with GCN.
  • Core clock speed of GeForce 945A is 397 MHz higher, than Radeon HD 7770M.
  • GeForce 945A and Radeon HD 7770M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce 945A is 1012 MHz higher, than Radeon HD 7770M.

Game benchmarks

high / 1080p 9−10 9−10
ultra / 1080p 5−6 5−6
QHD / 1440p 0−1 0−1
low / 720p 20−22 21−24
medium / 1080p 10−12 10−12
The average gaming FPS of Radeon HD 7770M in Assassin's Creed Odyssey is 9% more, than GeForce 945A.

Full Specs

  GeForce 945A Radeon HD 7770M
Architecture Maxwell GCN
Code name GM108 Chelsea XT
Type Desktop Laptop
Release date 13 March 2015 24 April 2012
Pipelines 384 512
Core clock speed 1072 MHz 675 MHz
Boost Clock 1189 MHz
Transistor count 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 28.54 21.60
Floating-point performance 903.2 gflops 691.2 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 5012 MHz 4000 MHz
Memory bandwidth 40.1 GB/s 64 GB/s
Shared memory -
DirectX 12 (11_0) 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.2.131
CUDA 5.0
Bitcoin / BTC (SHA256) 108 Mh/s
Laptop size medium sized
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