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Gaming Performance Comparison

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 290X Crossfire are significantly better than the AMD Radeon R9 280X Sapphire Toxic 3GB OC Edition.

The R9 280X has a 100 MHz higher core clock speed than the R9 290X, but the R9 290X has 224 more Texture Mapping Units than the R9 280X. As a result, the R9 290X exhibits a 211.2 GTexel/s better Texture Fill Rate than the R9 280X. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The R9 280X has a 100 MHz higher core clock speed than the R9 290X, but the R9 290X has 96 more Render Output Units than the R9 280X. As a result, the R9 290X exhibits a 92.8 GPixel/s better Pixel Fill Rate than the R9 280X. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R9 290X was released less than a year after the R9 280X, and so they are likely to have similar driver support for optimizing performance when 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 R9 290X has 5120 MB more video memory than the R9 280X, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 290X also has superior memory performance overall.

The R9 290X has 332.8 GB/sec greater memory bandwidth than the R9 280X, which means that the memory performance of the R9 290X is massively better than the R9 280X.

The Radeon R9 290X Crossfire has 5632 Shader Processing Units and the Radeon R9 280X Sapphire Toxic 3GB OC Edition has 2048. However, the actual shader performance of the R9 290X is 5069 and the actual shader performance of the R9 280X is 2120. The R9 290X having 2949 better shader performance and an altogether better performance when taking into account other relevant data means that the R9 290X delivers a massively smoother and more efficient experience when processing graphical data than the R9 280X.

The Radeon R9 290X Crossfire requires 500 Watts to run and the Radeon R9 280X Sapphire Toxic 3GB OC Edition requires 250 Watts. We would recommend a PSU with at least 1250 Watts for the R9 290X. The R9 290X requires 250 Watts more than the R9 280X to run. The difference is significant enough that the R9 290X may have an adverse affect on your yearly electricity bills in comparison to the R9 280X.

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GPU Core Details

Core Speed1000 MHzvs1100 MHz
ArchitectureGCN 2.0 Hawaii XT (x2)GCN 1.1 Tahiti XTL
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Release Date24 Oct 201308 Oct 2013
GPU LinkGD LinkGD Link
Approved
Comparison

GPU Memory

Memory8192 MBvs3072 MB
Memory Speed1250 MHzvs1600 MHz
Memory Bus1024 Bitvs384 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth640GB/secvs307.2GB/sec
L2 Cache 2048 KB green tick vs 768 KB
Comparison

GPU Display

Shader Processing Units5632vs2048
Actual Shader Performance5069vs2120
Technology28nmvs28nm
Texture Mapping Units352vs128
Texture Rate352 GTexel/svs140.8 GTexel/s
Render Output Units128vs32
Pixel Rate128 GPixel/svs35.2 GPixel/s
Comparison

GPU Display Tech

DirectX11.2vs11.2
Shader Model5.0vs5.0
Open GL4.3vs4.3
Max Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections4vs1
HDMI Connections2vs1
Comparison

GPU Power Requirements

Max Power500 Wattsvs250 Watts

GPU Supporting Hardware

Recommended RAM12 GBvs8 GB
Recommended Screen Size5760x16001920x1080
Recommended PSU1250 Watts-

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R9 290X Crossfire is a solution of two Radeon R9 290X put together using AMD'S Crossfire technology.
Check the page of Radeon R9 290X to know more about its chip.
Crossfire relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, is up to 30% better than a single Radeon R9 290X performing by itself but at times (depending whether or not the 3D game supports crossfire or in the graphics driver) it may perform worse than a single Radeon R9 290X. Expect this combination to draw up to 500 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
Radeon R9 280X Sapphire Toxic 3GB OC Edition is a special edition of the high-end Radeon R9 280X.
This edition comes with a custom cooling system called "Tri-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 850MHz to 1100MHz, while the Boost clock is now of 1150MHz. Also, the operating memory clock is now of 1600MHz.
Benchmarks indicate a 6% performance boost over the standard edition and so this card surpasses a GeForce GTX 770 easily.
Recommended CPU-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 Variants--