Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 M275 GeForce GTX 660M
Red Dead Redemption 2 386% 435%
Cyberpunk 2077 568% 635%
Doom Eternal 318% 360%
Dragon Ball Z Kakarot 200% 230%
Call of Duty: Modern Warfare 386% 435%
Microsoft Flight Simulator 568% 635%
FIFA 20 159% 185%
Grand Theft Auto VI 643% 718%
Star Wars: Jedi - Fallen Order 568% 635%
Need For Speed Heat 386% 435%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 M275 are very slightly better than the Nvidia GeForce GTX 660M.

The Radeon R9 M275 has no core clock speed set, so any comparison between Texture and Pixel Fill Rates is not currently possible.

The Radeon R9 M275 was released over a year more recently than the GeForce GTX 660M, and so the Radeon R9 M275 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GeForce GTX 660M.

The Radeon R9 M275 and the GeForce GTX 660M have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The memory bandwidth of the Radeon R9 M275 and the GeForce GTX 660M are the same, which means the Radeon R9 M275 and the GeForce GTX 660M have equal limitations when it comes to graphical data transfer.

The Radeon R9 M275 has 640 Shader Processing Units and the GeForce GTX 660M has 384. However, the actual shader performance of the Radeon R9 M275 is 0 and the actual shader performance of the GeForce GTX 660M is 365. The GeForce GTX 660M having 365 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce GTX 660M delivers a slightly smoother and more efficient experience when processing graphical data than the Radeon R9 M275.

The Radeon R9 M275 requires 50 Watts to run and the GeForce GTX 660M requires 50 Watts. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed-vs835 MHz
Boost Clock-vs950 MHz
ArchitectureVenus XTKepler GK107-N13E-GE-A2
OC Potential Good vs Poor
Driver Support - vs Good
Release Date09 Mar 2014vs22 Mar 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
7.9
1600x900 - vs green tick
5.9
1920x1080 - vs green tick
4.4
2560x1440 - vs green tick
2.8
3840x2160 - vs green tick
1.8

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1000 MHzvs1000 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth64GB/secvs64GB/sec
L2 Cache - vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units640vs384
Actual Shader Performance-vs18%
Technology28nmvs28nm
Texture Mapping Units40vs32
Texture Rate-vs26.7 GTexel/s
Render Output Units16vs16
Pixel Rate-vs13.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power50 Wattsvs50 Watts
Recommended PSU--

GPU Features

DirectX11.2vs12.0
Shader Model5.0vs5.0
Open GL4.3vs4.5
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-4600M 2-Core 2.9GHzvsIntel Core i5-3360M 2.8GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R9 M275 is a fast-middle-class-level graphics card based on the second revision of the Graphics Core Next architecture.
It offers a core codenamed Venus XT that packs 640 Shader Processing Units, 40 TMUs and 16 ROPs, on a 128-bit memory interface of fast GDDR5. While the central unit runs at XXXMHz and goes up to XXXMHz, in Turbo Mode, the memory clock operates at 1000MHz. The regular version should offer 2GB of video memory but expect to see gimmicks of up to 4GB.
Its performance is still unknown so use this rank as a guideline only.
Overview
GeForce GTX 660M 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-N13E-GE-A2 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 835MHz and goes up to 950MHz, 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 45W, it is suited for average sized laptops.

Performance
Gaming benchmarks indicate its performance is not too far from 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 GTX 660M.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
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