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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R7 265 Sapphire Dual-X 2GB Edition Crossfire GeForce GTX 660 Zotac AMP Edition
Cyberpunk 2077 84% 183%
eFootball PES 2020 18% 27%
Borderlands 3 41% 118%
Grand Theft Auto VI 104% 215%
Metro: Exodus 104% 215%
Doom Eternal 15% 77%
The Division 2 104% 215%
Total War: Three Kingdoms 89% 191%
Watch Dogs Legion 41% 118%
FIFA 20 19% 25%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R7 265 Sapphire Dual-X 2GB Edition Crossfire are significantly better than the Nvidia GeForce GTX 660 Zotac AMP Edition.

The GTX 660 has a 146 MHz higher core clock speed than the R7 265, but the R7 265 has 48 more Texture Mapping Units than the GTX 660. As a result, the R7 265 exhibits a 31.5 GTexel/s better Texture Fill Rate than the GTX 660. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 660 has a 146 MHz higher core clock speed than the R7 265, but the R7 265 has 40 more Render Output Units than the GTX 660. As a result, the R7 265 exhibits a 32.5 GPixel/s better Pixel Fill Rate than the GTX 660. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R7 265 was released over a year more recently than the GTX 660, and so the R7 265 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GTX 660.

Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.

The R7 265 has 2048 MB more video memory than the GTX 660, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R7 265 also has superior memory performance overall.

The R7 265 has 199.8 GB/sec greater memory bandwidth than the GTX 660, which means that the memory performance of the R7 265 is massively better than the GTX 660.

The Radeon R7 265 Sapphire Dual-X 2GB Edition Crossfire has 2048 Shader Processing Units and the GeForce GTX 660 Zotac AMP Edition has 960. However, the actual shader performance of the R7 265 is 1231 and the actual shader performance of the GTX 660 is 1067. The R7 265 having 164 better shader performance and an altogether better performance when taking into account other relevant data means that the R7 265 delivers a massively smoother and more efficient experience when processing graphical data than the GTX 660.

The Radeon R7 265 Sapphire Dual-X 2GB Edition Crossfire requires 300 Watts to run but there is no entry for the GeForce GTX 660 Zotac AMP Edition. We would recommend a PSU with at least 650 Watts for the R7 265.

Can I Run It

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GPU Architecture

Core Speed900 MHzvs1046 MHz
Boost Clock925 MHzvs1111 MHz
ArchitecturePitcairn PROKepler GK106-400-A1
OC Potential Fair vs Poor
Driver Support - vs Good
Release Date13 Feb 2014vs01 Sep 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900 - vs green tick
9.1
1920x1080
8.9
green tick vs
7.2
2560x1440 - vs green tick
5.2
3840x2160 - vs green tick
3.5

GPU Memory

Memory4096 MBvs2048 MB
Memory Speed1400 MHzvs1652 MHz
Memory Bus512 Bitvs192 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth358.4GB/secvs158.6GB/sec
L2 Cache - vs green tick 384 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units2048vs960
Actual Shader Performance59%vs51%
Technology28nmvs28nm
Texture Mapping Units128vs80
Texture Rate115.2 GTexel/svs83.7 GTexel/s
Render Output Units64vs24
Pixel Rate57.6 GPixel/svs25.1 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power300 Watts-
Recommended PSU650 Watts & 24 Amps-

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-4670K 3.4GHzvsIntel Core i5-3470 3.2GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R7 265 Sapphire Dual-X 2GB Edition Crossfire is a solution of two Radeon R7 265 Sapphire Dual-X 2GB Edition put together using AMD's Crossfire technology.GeForce GTX 660 Zotac AMP Edition a special edition of GeForce GTX 660.
The new features include a new cooling system and in terms of overclocking, the base-clock was increased from 980MHz to 1046MHz and the boost clock can now reach 1111MHz, instead of 1033MHz. The memory clock was raised to 1652MHz.
Benchmarks indicate a 5.5% performance when compared to the reference card.
Recommended CPUAMD Opteron 6176
Intel Xeon Processor W3570
Intel Xeon Processor W3565
Intel Core i5-3350P 3.1GHz
Intel Core i5-3340 3.1GHz
Intel Core i5-4460 3.2GHz
Intel Core i5-4570S 2.9GHz
Intel Xeon E3-1220 v2
Intel Xeon Processor X5675
Intel Core i5-7400 3.0GHz
Possible GPU Upgrades-GeForce GTX 660 Twin Frozr OC Edition SLI
GeForce GTX 780
Radeon HD 7970 GHz MSI Lightning BE 3GB Edition
Quadro M4000
GeForce GTX 950 2GB SLI
GPU Variants--

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