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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 270X Sapphire Dual-X 4GB OC Edition GeForce 8800 GTS 640MB

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 270X Sapphire Dual-X 4GB OC Edition are massively better than the Nvidia GeForce 8800 GTS 640MB.

The R9 270X has a 507 MHz higher core clock speed and 56 more Texture Mapping Units than the 8800 GTS. This results in the R9 270X providing 69.3 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 R9 270X has a 507 MHz higher core clock speed and 12 more Render Output Units than the 8800 GTS. This results in the R9 270X providing 22.3 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 R9 270X was released over three years more recently than the 8800 GTS, and so the R9 270X is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the 8800 GTS when running the latest games.

The R9 270X has 3456 MB more video memory than the 8800 GTS, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 270X also has superior memory performance overall.

The R9 270X has 115.8 GB/sec greater memory bandwidth than the 8800 GTS, which means that the memory performance of the R9 270X is massively better than the 8800 GTS.

The Radeon R9 270X Sapphire Dual-X 4GB OC Edition has 1280 Shader Processing Units and the GeForce 8800 GTS 640MB has 96. However, the actual shader performance of the R9 270X is 1164 and the actual shader performance of the 8800 GTS is 123. The R9 270X having 1041 better shader performance and an altogether better performance when taking into account other relevant data means that the R9 270X delivers a massively smoother and more efficient experience when processing graphical data than the 8800 GTS.

The R9 270X transistor size technology is 62 nm (nanometers) smaller than the 8800 GTS. This means that the R9 270X is expected to run massively cooler and achieve higher clock frequencies than the 8800 GTS.

The Radeon R9 270X Sapphire Dual-X 4GB OC Edition requires 180 Watts to run and the GeForce 8800 GTS 640MB requires 143 Watts. We would recommend a PSU with at least 500 Watts for the R9 270X and a PSU with at least 400 Watts for the 8800 GTS. The R9 270X requires 37 Watts more than the 8800 GTS to run. The difference is significant enough that the R9 270X may have a slight adverse affect on your yearly electricity bills in comparison to the 8800 GTS.

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GPU Architecture

Core Speed1020 MHzvs513 MHz
Boost Clock1070 MHzvs-
ArchitectureGCN 1.1 Curacao XTTesla G80
OC Potential Poor vs Fair
Driver Support Great vs Poor
Release Date08 Oct 2013vs01 Nov 2006
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
9.5
green tick vs
5.4
1920x1080
7.6
green tick vs
3.9
2560x1440
5.5
green tick vs
2.4
3840x2160
4
green tick vs
1.6

GPU Memory

Memory4096 MBvs640 MB
Memory Speed1400 MHzvs792 MHz
Memory Bus256 Bitvs320 Bit
Memory TypeGDDR5vsGDDR3
Memory Bandwidth179.2GB/secvs63.4GB/sec
L2 Cache 512 KB green tick vs 0 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units1280vs96
Actual Shader Performance56%vs6%
Technology28nmvs90nm
Texture Mapping Units80vs24
Texture Rate81.6 GTexel/svs12.3 GTexel/s
Render Output Units32vs20
Pixel Rate32.6 GPixel/svs10.3 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power180 Wattsvs143 Watts
Recommended PSU500 Wattsvs400 Watts & 26 Amps

GPU Features

DirectX12.0vs10.0
Shader Model5.0vs4.0
Open GL4.4vs3.3
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-4430 3.0GHzvsIntel Core 2 Extreme QX6700 2.66GHz
Recommended RAM8 GBvs4 GB
Maximum Recommended Gaming Resolution1920x1080vs1440x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R9 270X Sapphire Dual-X 4GB OC Edition is a special edition of the high-end Radeon R9 270X.
This edition comes with a custom cooling system called "Vapor-X", which reduces the card's temperature under load, significantly and comes overclocked out of the box in the central unit that was increased from 1000MHz to 1020MHz, while the Boost clock is now of 1070MHz.
Furthermore, the card has twice as much memory when compared to the reference card. However, this card will not benefit from extra memory and thus such feature ends up being useless.
Expect little or no performance boost over the standard edition and exactly the same performance as "Radeon R9 270X Sapphire Dual-X 2GB OC Edition"
GeForce 8800 GTS 640MB is a high-end GFX based on the 90nm variant of the first-shader unified architecture.
It's based on the G80 Core and offers 96 Shader Processing Units, 24 TMUs and 20 ROPs, on a 320-bit memory interface of GDDR3. The central unit runs at 513MHz and the memory clock operates 792MHz. It will consume no more than 143 Watt.
Technically, next in series, when compared to GeForce 8800 GT, it performs worse as the amount of Shader Processing Units and TMUs was reduced and the GPU comes under-clocked, in exchange for a wider bus-width and extra video memory.
Today's modern demanding games can be played at medium (most) or high settings (some) smoothly. However, DirectX 11 based games aren't supported.
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
AMD Opteron 2435
AMD APU A8-5500B Quad-Core
AMD APU A8-5500 Quad-Core
AMD Opteron 3350 HE
Intel Xeon Processor X5470
Possible GPU Upgrades-GeForce GTX 460 Asus DirectCU TOP 1GB Edition
GeForce GTX 560 Gainward Phantom 1GB Edition
GeForce GTX 560 Gainward Golden Sample 1GB Edition
Radeon R7 260X v2 MSI OC v1 2GB Edition
Radeon R7 260X v2 MSI OC 1GB Edition
GPU Variants-GeForce 8800 GTS EVGA SSC 640MB Edition

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