GeForce GT 755M SLI vs Radeon HD 7990

When comparing GeForce GT 755M SLI and Radeon HD 7990, 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 GT 755M SLI and Radeon HD 7990 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce GT 755M SLI is a Laptop Graphics Card

Note: GeForce GT 755M SLI 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 GeForce GT 755M SLI here:

Main Specs

  GeForce GT 755M SLI Radeon HD 7990
Power consumption (TDP) 2x ~50 Watt 375 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2x 2 GB 3 GB
Display Connectors 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 7990 has 18650% more power consumption, than GeForce GT 755M SLI.
  • Radeon HD 7990 has 1 GB more memory, than GeForce GT 755M SLI.
  • GeForce GT 755M SLI is used in Laptops, and Radeon HD 7990 - in Desktops.
  • GeForce GT 755M SLI is build with Kepler architecture, and Radeon HD 7990 - with GCN 1.0.
  • Core clock speed of GeForce GT 755M SLI is 30 MHz higher, than Radeon HD 7990.
  • GeForce GT 755M SLI and Radeon HD 7990 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7990 is 600 MHz higher, than GeForce GT 755M SLI.

Game benchmarks

high / 1080p 14−16 35−40
ultra / 1080p 8−9 21−24
QHD / 1440p 2−3 16−18
4K / 2160p 10−11
low / 720p 30−35 60−65
medium / 1080p 18−20 40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 140% more, than GeForce GT 755M SLI.

Full Specs

  GeForce GT 755M SLI Radeon HD 7990
Architecture Kepler GCN 1.0
Code name N14P-? Malta
Type Laptop Desktop
Release date 1 November 2013 24 April 2013
Pipelines 768 2048
Core clock speed 980 MHz 950 MHz
Boost Clock 1000 MHz
Transistor count 2x 1300 Million 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 128.0
Floating-point performance 2x 4,096 gflops
Length 307 mm
Memory bus width 2x 128 Bit 384 Bit
Memory clock speed 5400 MHz 6000 MHz
Memory bandwidth 288.0 GB/s
Shared memory -
DirectX DirectX 11, Shader 5.0 12 (11_1)
Shader Model 5.1
OpenGL 4.6
OpenCL 1.2
Vulkan 1.2.131
CUDA +
Bitcoin / BTC (SHA256) 459 Mh/s
Laptop size large
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
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