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Radeon HD 4890 2GB vs Radeon R7 260X

Intro

The Radeon HD 4890 2GB has a GPU core speed of 1000 MHz, and the 2048 MB of GDDR5 memory runs at 975 MHz through a 256-bit bus. It also is comprised of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon R7 260X, which features a core clock frequency of 1100 MHz and a GDDR5 memory frequency of 1625 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X 115 Watts
Radeon HD 4890 2GB 190 Watts
Difference: 75 Watts (65%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4890 2GB should theoretically be a bit better than the Radeon R7 260X overall. (explain)

Radeon HD 4890 2GB 124800 MB/sec
Radeon R7 260X 104000 MB/sec
Difference: 20800 (20%)

Texel Rate

The Radeon R7 260X will be much (approximately 54%) better at AF than the Radeon HD 4890 2GB. (explain)

Radeon R7 260X 61600 Mtexels/sec
Radeon HD 4890 2GB 40000 Mtexels/sec
Difference: 21600 (54%)

Pixel Rate

The Radeon R7 260X should be a bit (more or less 10%) more effective at FSAA than the Radeon HD 4890 2GB, and also capable of handling higher screen resolutions more effectively. (explain)

Radeon R7 260X 17600 Mpixels/sec
Radeon HD 4890 2GB 16000 Mpixels/sec
Difference: 1600 (10%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon HD 4890 2GB

Amazon.com

Check prices at:

Radeon R7 260X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 4890 2GB Radeon R7 260X
Manufacturer AMD AMD
Year Apr 2, 2009 October 2013
Code Name RV790 XT Bonaire XTX
Memory 2048 MB 2048 MB
Core Speed 1000 MHz 1100 MHz
Memory Speed 3900 MHz 6500 MHz
Power (Max TDP) 190 watts 115 watts
Bandwidth 124800 MB/sec 104000 MB/sec
Texel Rate 40000 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 800(160x5) 896
Texture Mapping Units 40 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 959 million 2080 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 4890 2GB

Amazon.com

Check prices at:

Radeon R7 260X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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