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Gaming Performance Comparison

In terms of overall gaming performance, the graphical capabilities of the Radeon R9 270X and the GTX 660 Ti are equal.

The Radeon R9 270X has a 85 MHz higher core clock speed than the GTX 660 Ti, but the GTX 660 Ti has 32 more Texture Mapping Units than the Radeon R9 270X. As a result, the GTX 660 Ti exhibits a 22.5 GTexel/s better Texture Fill Rate than the Radeon R9 270X. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The Radeon R9 270X has a 85 MHz higher core clock speed and 8 more Render Output Units than the GTX 660 Ti. This results in the Radeon R9 270X providing 10 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 Radeon R9 270X was released over a year more recently than the GTX 660 Ti, and so the Radeon R9 270X is likely to have better driver support, meaning it will be more optimized for running the latest games.

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 Radeon R9 270X and the GeForce GTX 660 Ti Inno3D Edition have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The Radeon R9 270X has 35 GB/sec greater memory bandwidth than the GTX 660 Ti, which means that the memory performance of the Radeon R9 270X is noticeably better than the GTX 660 Ti.

The Radeon R9 270X has 1280 Shader Processing Units and the GeForce GTX 660 Ti Inno3D Edition has 1344. However, the actual shader performance of the Radeon R9 270X is 1210 and the actual shader performance of the GTX 660 Ti is 1317. The GTX 660 Ti having 107 better shader performance is not particularly notable, as altogether the Radeon R9 270X performs better when taking into account other relevant data.

The Radeon R9 270X requires 180 Watts to run and the GeForce GTX 660 Ti Inno3D Edition requires 150 Watts. We would recommend a PSU with at least 500 Watts for the Radeon R9 270X and a PSU with at least 500 Watts for the GTX 660 Ti. The Radeon R9 270X requires 30 Watts more than the GTX 660 Ti to run. The difference is not significant enough for the Radeon R9 270X to have a noticeably larger impact on your yearly electricity bills than the GTX 660 Ti.

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GPU Core Details

Core Speed1000 MHzvs915 MHz
ArchitectureGCN 1.1 Curacao XTKepler GK104-300-KD-A2
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Release Date08 Oct 201301 Aug 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
10
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10
1920x1080
9.2
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9.2
2560x1440
7.4
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7.3
3840x2160
5.7
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5.5

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1400 MHzvs1502 MHz
Memory Bus256 Bitvs192 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth179.2GB/secvs144.2GB/sec
L2 Cache 512 KB green tick vs 384 KB
Comparison

GPU Display

Shader Processing Units1280vs1344
Actual Shader Performance1210vs1317
Technology28nmvs28nm
Texture Mapping Units80vs112
Texture Rate80 GTexel/svs102.5 GTexel/s
Render Output Units32vs24
Pixel Rate32 GPixel/svs22 GPixel/s
Comparison

GPU Display Tech

DirectX11.2vs11.1
Shader Model5.0vs5.0
Open GL4.3vs4.3
Max Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
Comparison

GPU Power Requirements

Max Power180 Wattsvs150 Watts

GPU Supporting Hardware

Recommended RAM8 GBvs8 GB
Recommended Screen Size1920x10801920x1080
Recommended PSU500 Watts & 34 Ampsvs500 Watts

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R9 270X is a high-end Graphics Card based on the Curacao XT core of the Graphics Core Next Architecture.
The Curacao XT Core has its roots on the Pitcairn XT Core used on its predecessor - Radeon HD 7870. It offers 1280 Shader Processing Units, 80 TMUs and 32 ROPs, on a 256-bit memory interface.
However and when compared to its predecessor, Radeon R9 270X offers a Boost Clock of 1050MHz, despite its central unit still running at 1000MHz. Furthermore, its operating memory clock is significantly higher and of 1400MHz, leading to extra memory bandwidth.
Benchmarks indicate its performance is almost on level with powerful Radeon HD 7950, though its Boost Edition and famous GeForce GTX 660 Ti still perform considerably better.
Still, Radeon R9 270X has a launching price of just $199 which makes it a very competitive card.
Expect to run most modern demanding games, such as Crysis 3 and Metro Last Light at highest settings while using a 1080p resolution.
GeForce GTX 660 Ti Inno3D Edition is a special edition of GeForce GTX 660 Ti.
It's a rename with no new features - not even a custom cooling system and so the so the performance is exactly like the standard GeForce GTX 660 Ti.
Recommended CPUAMD Athlon II X4 651
AMD Athlon II X4 651K
AMD APU A8-3870K Quad-Core
AMD Athlon II X4 650
Intel Core i3-4130 3.4GHz
Intel Core i7-4785T 4-Core 2.2GHz
Intel Xeon E5-2407 v2
Intel Core i5-4570 3.2GHz
Intel Core i5-4670S 3.1GHz
Intel Core i5-3570 3.4GHz
Possible GPU Upgrades--
GPU VariantsRadeon R9 270X Sapphire Dual-X 2GB OC Edition
Radeon R9 270X PowerColor 2GB OC Edition
Radeon R9 270X Club3D royalQueen Edition
Radeon R9 270X Sapphire Dual-X 4GB OC Edition
Radeon R9 270X PowerColor 2GB OC TurboDuo Edition
Radeon R9 270X XFX Double D 4GB Edition
Radeon R9 270X Sapphire Vapor-X 2GB OC Edition
Radeon R9 270X DirectCU II TOP 2GB Edition
Radeon R9 270X Gigabyte 2GB OC Edition
Radeon R9 270X Gigabyte 4GB OC Edition
Radeon R9 270X Asus DirectCU II 4GB Edition
Radeon R9 270X MSI Gaming 2GB Edition
Radeon R9 270X HIS IceQ X2 Turbo Edition
Radeon R9 270X XFX Double D Black Edition
Radeon R9 270X PowerColor PCS+ Edition
Radeon R9 270X MSI Gaming 4GB Edition
Radeon R9 270X MSI Hawk Edition
Radeon R9 270X PowerColor Devil Edition
Radeon R9 270X Sapphire Toxic 2GB OC Edition
Radeon R9 270X Sapphire Black Diamond 2GB Edition
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