Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7450M GeForce GTX 660M
Halo: Reach 548% 70%
Cyberpunk 2077 2700% 635%
Red Dead Redemption 2 1938% 435%
Dragon Ball Z Kakarot 1157% 230%
Call of Duty: Modern Warfare 1938% 435%
Doom Eternal 1652% 360%
Microsoft Flight Simulator 2700% 635%
Grand Theft Auto VI 3014% 718%
FIFA 20 986% 185%
Need For Speed Heat 1938% 435%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660M are massively better than the AMD Radeon HD 7450M.

The GeForce GTX 660M has a 135 MHz higher core clock speed and 24 more Texture Mapping Units than the Radeon HD 7450M. This results in the GeForce GTX 660M providing 21.1 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GeForce GTX 660M has a 135 MHz higher core clock speed and 12 more Render Output Units than the Radeon HD 7450M. This results in the GeForce GTX 660M providing 10.6 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GeForce GTX 660M was released less than a year after the Radeon HD 7450M, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GeForce GTX 660M has 1024 MB more video memory than the Radeon HD 7450M, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GeForce GTX 660M also has superior memory performance overall.

The GeForce GTX 660M has 49.6 GB/sec greater memory bandwidth than the Radeon HD 7450M, which means that the memory performance of the GeForce GTX 660M is noticeably better than the Radeon HD 7450M.

The Radeon HD 7450M has 160 Shader Processing Units and the GeForce GTX 660M has 384. However, the actual shader performance of the Radeon HD 7450M is 56 and the actual shader performance of the GeForce GTX 660M is 365. The GeForce GTX 660M having 309 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce GTX 660M delivers a significantly smoother and more efficient experience when processing graphical data than the Radeon HD 7450M.

The GeForce GTX 660M transistor size technology is 12 nm (nanometers) smaller than the Radeon HD 7450M. This means that the GeForce GTX 660M is expected to run slightly cooler and achieve higher clock frequencies than the Radeon HD 7450M.

The Radeon HD 7450M requires 7 Watts to run and the GeForce GTX 660M requires 50 Watts. The GeForce GTX 660M requires 43 Watts more than the Radeon HD 7450M to run. The difference is significant enough that the GeForce GTX 660M may have a slight adverse affect on your yearly electricity bills in comparison to the Radeon HD 7450M.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed700 MHzvs835 MHz
Boost Clock-vs950 MHz
ArchitectureTerascale 2 Seymour PROKepler GK107-N13E-GE-A2
OC Potential Fair vs Poor
Driver Support Poor vs Good
Release Date07 Jan 2012vs22 Mar 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
4.1
vs green tick
7.9
1600x900
2.7
vs green tick
5.9
1920x1080
1.9
vs green tick
4.4
2560x1440
1.4
vs green tick
2.8
3840x2160 - vs green tick
1.8

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed900 MHzvs1000 MHz
Memory Bus64 Bitvs128 Bit
Memory TypeDDR3vsGDDR5
Memory Bandwidth14.4GB/secvs64GB/sec
L2 Cache 128 KB 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 Units160vs384
Actual Shader Performance3%vs18%
Technology40nmvs28nm
Texture Mapping Units8vs32
Texture Rate5.6 GTexel/svs26.7 GTexel/s
Render Output Units4vs16
Pixel Rate2.8 GPixel/svs13.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections1vs0
DVI Connections1vs0
HDMI Connections1vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power7 Wattsvs50 Watts
Recommended PSU--

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Celeron Dual-Core 877 1.4GHzvsIntel Core i5-3360M 2.8GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1280x720vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon HD 7450M is an Entry-Level Mobile Graphics Card based on the second revision of the Terascale Architecture.

Architecture
The Second variant of the Terascale 2 Architecture is still manufactured with a 40nm technology and despite allowing more Stream Cores, their design remains more or less the same compared to the first variant.

GPU
It equips a GPU codenamed Seymour PRO which has 2 Compute Units activated and thus offers 160 Shader Processing Units, 8 TMUs and 4 ROPs. The Central Unit runs at 700MHz.

Memory
The GPU accesses a 1GB frame buffer of DDR3, through a 64-bit memory interface. The size of the frame buffer is adequate. The memory clock operates at 900MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for HD3D, Eyefinity, App Acceleration, PowerPlay and other technologies.

Power Consumption
With a rated board TDP of 7W, it is suited for smaller laptops.

Performance
Gaming benchmarks put its performance somewhat above a GeForce GT 520M.

System Suggestions
We recommend a Budget Processor (Intel Celeron Mobile and 4GB of RAM for a system with Radeon HD 7450M.
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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