Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 660M GeForce GT 325M
Halo: Reach 70% 542%
Cyberpunk 2077 635% 2674%
Red Dead Redemption 2 435% 1919%
Dragon Ball Z Kakarot 230% 1145%
Call of Duty: Modern Warfare 435% 1919%
Microsoft Flight Simulator 635% 2674%
Doom Eternal 360% 1636%
Grand Theft Auto VI 718% 2985%
FIFA 20 185% 975%
Need For Speed Heat 435% 1919%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660M are massively better than the Nvidia GeForce GT 325M.

The GeForce GTX 660M has a 385 MHz higher core clock speed and 16 more Texture Mapping Units than the GeForce GT 325M. This results in the GeForce GTX 660M providing 19.5 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 385 MHz higher core clock speed and 8 more Render Output Units than the GeForce GT 325M. This results in the GeForce GTX 660M providing 9.8 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 over a year more recently than the GeForce GT 325M, and so the GeForce GTX 660M is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GeForce GT 325M.

The GeForce GTX 660M has 1024 MB more video memory than the GeForce GT 325M, 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 29.9 GB/sec greater memory bandwidth than the GeForce GT 325M, which means that the memory performance of the GeForce GTX 660M is slightly better than the GeForce GT 325M.

The GeForce GTX 660M has 384 Shader Processing Units and the GeForce GT 325M has 48. However, the actual shader performance of the GeForce GTX 660M is 365 and the actual shader performance of the GeForce GT 325M is 50. The GeForce GTX 660M having 315 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 GeForce GT 325M.

The GeForce GTX 660M transistor size technology is 12 nm (nanometers) smaller than the GeForce GT 325M. This means that the GeForce GTX 660M is expected to run slightly cooler and achieve higher clock frequencies than the GeForce GT 325M.

The GeForce GTX 660M requires 50 Watts to run and the GeForce GT 325M requires 23 Watts. The GeForce GTX 660M requires 27 Watts more than the GeForce GT 325M to run. The difference is not significant enough for the GeForce GTX 660M to have a noticeably larger impact on your yearly electricity bills than the GeForce GT 325M.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed835 MHzvs450 MHz
Boost Clock950 MHzvs-
ArchitectureKepler GK107-N13E-GE-A2GT216
OC Potential Poor vs Good
Driver Support Good vs -
Release Date22 Mar 2012vs10 Jan 2010
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

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

GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1000 MHzvs1066 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeGDDR5vsDDR3
Memory Bandwidth64GB/secvs34.1GB/sec
L2 Cache 256 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs48
Actual Shader Performance18%vs2%
Technology28nmvs40nm
Texture Mapping Units32vs16
Texture Rate26.7 GTexel/svs7.2 GTexel/s
Render Output Units16vs8
Pixel Rate13.4 GPixel/svs3.6 GPixel/s
Comparison

GPU Outputs

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

GPU Power Requirements

Max Power50 Wattsvs23 Watts
Recommended PSU--

GPU Features

DirectX12.0vs10.1
Shader Model5.0vs4.1
Open GL4.5vs2.1
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfireyesvsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3360M 2.8GHzvsIntel Core i5-430M 2.26GHz
Recommended RAM8 GBvs4 GB
Maximum Recommended Gaming Resolution1600x900vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
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.
GeForce GT 325M is a middle-class level GFX of the 300M Series released by NVIDIA in 2010. The biggest hindrance it has is the fact that it only supports DirectX up to 10.1 so DirectX 11 games aren't supported.
The performance depends a lot on the memory type used which can either be DDR2 or DDR3. This is the DDR3 version so it's capable of playing demanding games (like Crysis 2) at medium settings. However, very demanding games like Metro 2033 will require very reduced settings to be played smoothly.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
-

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