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GeForce GTX 470 vs Radeon HD 4890 1GB

Intro

The GeForce GTX 470 comes with a core clock speed of 607 MHz and a GDDR5 memory speed of 837 MHz. It also uses a 320-bit memory bus, and uses a 40 nm design. It is made up of 448 SPUs, 56 Texture Address Units, and 40 ROPs.

Compare those specifications to the Radeon HD 4890 1GB, which has clock speeds of 1000 MHz on the GPU, and 975 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

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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

The GeForce GTX 470 should theoretically perform just a 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 a small bit (approximately 18%) faster with regards to 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

If using lots of anti-aliasing is important to you, then the GeForce GTX 470 is the winner, by a large margin. (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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential 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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