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Radeon HD 4890 1GB vs Radeon R7 260X

Intro

The Radeon HD 4890 1GB makes use of a 55 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory is set to run at a speed of 975 MHz on this particular card. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Compare all of that to the Radeon R7 260X, which uses a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 memory works at a frequency of 1625 MHz on this specific model. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X 115 Watts
Radeon HD 4890 1GB 190 Watts
Difference: 75 Watts (65%)

Memory Bandwidth

The Radeon HD 4890 1GB, in theory, should perform a bit faster than the Radeon R7 260X overall. (explain)

Radeon HD 4890 1GB 124800 MB/sec
Radeon R7 260X 104000 MB/sec
Difference: 20800 (20%)

Texel Rate

The Radeon R7 260X will be a lot (approximately 54%) more effective at anisotropic filtering than the Radeon HD 4890 1GB. (explain)

Radeon R7 260X 61600 Mtexels/sec
Radeon HD 4890 1GB 40000 Mtexels/sec
Difference: 21600 (54%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 260X is superior to the Radeon HD 4890 1GB, though only just barely. (explain)

Radeon R7 260X 17600 Mpixels/sec
Radeon HD 4890 1GB 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 1GB

Amazon.com

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Radeon R7 260X

Amazon.com

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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 1GB Radeon R7 260X
Manufacturer AMD AMD
Year Apr 2, 2009 October 2013
Code Name RV790 XT Bonaire XTX
Memory 1024 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 maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4890 1GB

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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