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Radeon HD 4890 1GB vs Radeon R9 M290X

Intro

The Radeon HD 4890 1GB has a GPU core speed of 1000 MHz, and the 1024 MB of GDDR5 RAM is set to run at 975 MHz through a 256-bit bus. It also is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon R9 M290X, which features clock speeds of 850 MHz on the GPU, and 1200 MHz on the 4096 MB of GDDR5 RAM. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X 100 Watts
Radeon HD 4890 1GB 190 Watts
Difference: 90 Watts (90%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M290X should theoretically be much superior to the Radeon HD 4890 1GB overall. (explain)

Radeon R9 M290X 153600 MB/sec
Radeon HD 4890 1GB 124800 MB/sec
Difference: 28800 (23%)

Texel Rate

The Radeon R9 M290X will be quite a bit (approximately 70%) more effective at anisotropic filtering than the Radeon HD 4890 1GB. (explain)

Radeon R9 M290X 68000 Mtexels/sec
Radeon HD 4890 1GB 40000 Mtexels/sec
Difference: 28000 (70%)

Pixel Rate

The Radeon R9 M290X will be much (approximately 70%) faster with regards to full screen anti-aliasing than the Radeon HD 4890 1GB, and will be capable of handling higher screen resolutions better. (explain)

Radeon R9 M290X 27200 Mpixels/sec
Radeon HD 4890 1GB 16000 Mpixels/sec
Difference: 11200 (70%)

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

Check prices at:

Radeon R9 M290X

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 1GB Radeon R9 M290X
Manufacturer AMD AMD
Year Apr 2, 2009 May 1 2014
Code Name RV790 XT Neptune XT
Memory 1024 MB 4096 MB
Core Speed 1000 MHz 850 MHz
Memory Speed 3900 MHz 4800 MHz
Power (Max TDP) 190 watts 100 watts
Bandwidth 124800 MB/sec 153600 MB/sec
Texel Rate 40000 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 800(160x5) 1280
Texture Mapping Units 40 80
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 55 nm 28 nm
Transistors 959 million (Unknown) 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: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - 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 R9 M290X

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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