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Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 750M 2GB GDDR5 Radeon HD 6990M
Cyberpunk 2077 576% 394%
Call of Duty: Modern Warfare 576% 394%
Borderlands 3 420% 280%
Remnant: From the Ashes 360% 236%
Need For Speed Heat 392% 260%
eFootball PES 2020 236% 145%
Marvel's Avengers 576% 394%
FIFA 20 162% 92%
Red Dead Redemption 2 576% 394%
Grand Theft Auto VI 652% 450%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 6990M are significantly better than the Nvidia GeForce GT 750M 2GB GDDR5.

The GT 750M has a 226 MHz higher core clock speed than the Radeon HD 6990M, but the Radeon HD 6990M has 24 more Texture Mapping Units than the GT 750M. As a result, the Radeon HD 6990M exhibits a 9.9 GTexel/s better Texture Fill Rate than the GT 750M. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 750M has a 226 MHz higher core clock speed than the Radeon HD 6990M, but the Radeon HD 6990M has 16 more Render Output Units than the GT 750M. As a result, the Radeon HD 6990M exhibits a 7.8 GPixel/s better Pixel Fill Rate than the GT 750M. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GT 750M was released over a year more recently than the Radeon HD 6990M, and so the GT 750M is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the Radeon HD 6990M.

The GeForce GT 750M 2GB GDDR5 and the Radeon HD 6990M have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The Radeon HD 6990M has 51.2 GB/sec greater memory bandwidth than the GT 750M, which means that the memory performance of the Radeon HD 6990M is much better than the GT 750M.

The GeForce GT 750M 2GB GDDR5 has 384 Shader Processing Units and the Radeon HD 6990M has 1120. However, the actual shader performance of the GT 750M is 406 and the actual shader performance of the Radeon HD 6990M is 400. The GT 750M having 6 better shader performance is not particularly notable, as altogether the Radeon HD 6990M performs better when taking into account other relevant data.

The GT 750M transistor size technology is 12 nm (nanometers) smaller than the Radeon HD 6990M. This means that the GT 750M is expected to run slightly cooler and achieve higher clock frequencies than the Radeon HD 6990M.

The GeForce GT 750M 2GB GDDR5 requires 50 Watts to run and the Radeon HD 6990M requires 100 Watts. The Radeon HD 6990M requires 50 Watts more than the GT 750M to run. The difference is significant enough that the Radeon HD 6990M may have a slight adverse affect on your yearly electricity bills in comparison to the GT 750M.

GPU Architecture

Core Speed941 MHzvs715 MHz
Boost Clock1058 MHzvs-
ArchitectureKepler GK107-N14P-GTTerascale 2 Blackcomb XTX
OC Potential Poor vs Fair
Driver Support Good vs Poor
Release Date09 Jan 2013vs12 Jul 2011
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
7.5
green tick vs -
1600x900
5.9
green tick vs -
1920x1080
4.6
green tick vs -
2560x1440
2.9
green tick vs -
3840x2160
1.9
green tick vs -

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1000 MHzvs900 MHz
Memory Bus128 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth64GB/secvs115.2GB/sec
L2 Cache 256 KB vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs1120
Actual Shader Performance20%vs19%
Technology28nmvs40nm
Texture Mapping Units32vs56
Texture Rate30.1 GTexel/svs40 GTexel/s
Render Output Units16vs32
Pixel Rate15.1 GPixel/svs22.9 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections0vs2
HDMI Connections0vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power50 Wattsvs100 Watts
Recommended PSU--

GPU Features

DirectX12.0vs11.0
Shader Model5.0vs5.0
Open GL4.5vs4.3
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfirenovsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3340M 2.7GHzvsIntel Core i7-2635QM 4-Core 2.0GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1600x900vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 750M v4 is a Fast-Middle-Class Mobile Graphics Card based on the first revision of the Kepler Architecture.

Architecture
The Kepler Architecture was NVIDIA's big step to power efficiency. Each Stream Multiprocessor (SMX) now hosts 192 Shader Processing Units - against the 48 of older Fermi Architecture, and has been redesigned being now clocked at the same speed of the Central Unit. This means they are more energy efficient and will consequently lead to cooler operating temperatures. However, it also means they are weaker. It can be said that one Fermi SMX is as fast as 2 Kepler SMXs.
Additionally, and not available in all GPUs, Kepler also introduced the Boost Clock Feature. The Boost Clock is an even higher Clock Speed activated when in gaming mode and becomes the effective speed of the GPU.

GPU
It equips a GPU Codenamed GK107-N14P-GT which has 2 Stream Multiprocessors activated and thus offers 384 Shader Processing Units, 32 TMUs and 16 ROPs. The Central Unit is initially clocked at 941MHz and goes up to 1058MHz, in Turbo Mode.

Memory
The GPU accesses a 2GB frame buffer of fast GDDR5, through a 128-bit memory interface. The size of the frame buffer is exaggerated and no way benefits the GPU. The Memory Clock Operates at 1000MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for SLI, Kepler Boost, Optimus, CUDA, OpenCL, DirectCompute, 3D Vision Surround, PhysX, Realtime Raytracing and other technologies

Power Consumption
With a rated board TDP of 50W, it is suited for average sized laptops.

Performance
GeForce GT 750M v2 is essentially a fast GeForce GTX 660M.
Gaming benchmarks indicate its performance is only slightly below the desktop GeForce GTX 650.

System Suggestions
We recommend a decent processor (Intel Core i5 Mobile) and 8GB of RAM for a system with GeForce GT 750M v4.
Radeon HD 6990M is a high-end GPU based on the 40nm Terrascale 2 architecture and not a dual-graphics solution, despite its naming.
It's based on the Barts Core (therefore related to Radeon HD 6870) and offers 1120 Shader Processing Units, 56 TMUs and 32 ROPs on a 256-bit memory interface of fast GDDR5. Its central clock runs at 715MHz and the memory clock operates at 900MHz.
Despite being based on the same Core used on Radeon HD 6870, its performance is more comparable to Radeon HD 6850 due to being heavily underclocked.
Today's modern games are playable at the highest settings but a few exceptions will require lower resolutions or modest presets to be played optimally.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-

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