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GeForce GTX 470 vs Radeon HD 4890 1GB

Intro

The GeForce GTX 470 has clock speeds of 607 MHz on the GPU, and 837 MHz on the 1280 MB of GDDR5 memory. It features 448 SPUs along with 56 TAUs and 40 Rasterization Operator Units.

Compare those specifications to the Radeon HD 4890 1GB, which makes use of a 55 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory runs at a speed of 975 MHz on this particular model. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4890 1GB 190 Watts
GeForce GTX 470 215 Watts
Difference: 25 Watts (13%)

Memory Bandwidth

Theoretically, the GeForce GTX 470 should perform a little bit faster than the Radeon HD 4890 1GB overall. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 4890 1GB 124800 MB/sec
Difference: 9120 (7%)

Texel Rate

The Radeon HD 4890 1GB is just a bit (more or less 18%) more effective at AF than the GeForce GTX 470. (explain)

Radeon HD 4890 1GB 40000 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 6008 (18%)

Pixel Rate

The GeForce GTX 470 should be quite a bit (about 52%) more effective at AA than the Radeon HD 4890 1GB, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 4890 1GB 16000 Mpixels/sec
Difference: 8280 (52%)

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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GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 4890 1GB

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 GeForce GTX 470 Radeon HD 4890 1GB
Manufacturer nVidia AMD
Year March 2010 Apr 2, 2009
Code Name GF100 RV790 XT
Memory 1280 MB 1024 MB
Core Speed 607 MHz 1000 MHz
Memory Speed 3348 MHz 3900 MHz
Power (Max TDP) 215 watts 190 watts
Bandwidth 133920 MB/sec 124800 MB/sec
Texel Rate 33992 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 448 800(160x5)
Texture Mapping Units 56 40
Render Output Units 40 16
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 3000 million 959 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 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 AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many 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

GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 4890 1GB

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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