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GeForce GTX 470 vs Radeon HD 4890 1GB

Intro

The GeForce GTX 470 features a core clock frequency of 607 MHz and a GDDR5 memory speed of 837 MHz. It also uses a 320-bit bus, and uses a 40 nm design. It features 448 SPUs, 56 TAUs, and 40 ROPs.

Compare all of that to the Radeon HD 4890 1GB, which has GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 975 MHz through a 256-bit bus. It also is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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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

In theory, the GeForce GTX 470 should perform a bit faster than the Radeon HD 4890 1GB in general. (explain)

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

Texel Rate

The Radeon HD 4890 1GB should be a bit (more or less 18%) better at anisotropic filtering 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 much (more or less 52%) better at full screen anti-aliasing than the Radeon HD 4890 1GB, and also should 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 max amount of information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum 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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