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GeForce GTX 460 (OEM) vs Radeon HD 4890 2GB

Intro

The GeForce GTX 460 (OEM) comes with a clock speed of 650 MHz and a GDDR5 memory frequency of 850 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 336 SPUs, 56 TAUs, and 32 ROPs.

Compare all of that to the Radeon HD 4890 2GB, which has a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 975 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It features 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)

GeForce GTX 460 (OEM) 150 Watts
Radeon HD 4890 2GB 190 Watts
Difference: 40 Watts (27%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4890 2GB should be 15% faster than the GeForce GTX 460 (OEM) overall, due to its higher bandwidth. (explain)

Radeon HD 4890 2GB 124800 MB/sec
GeForce GTX 460 (OEM) 108800 MB/sec
Difference: 16000 (15%)

Texel Rate

The Radeon HD 4890 2GB should be a little bit (about 10%) faster with regards to AF than the GeForce GTX 460 (OEM). (explain)

Radeon HD 4890 2GB 40000 Mtexels/sec
GeForce GTX 460 (OEM) 36400 Mtexels/sec
Difference: 3600 (10%)

Pixel Rate

The GeForce GTX 460 (OEM) is quite a bit (approximately 30%) faster with regards to FSAA than the Radeon HD 4890 2GB, and also able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 460 (OEM) 20800 Mpixels/sec
Radeon HD 4890 2GB 16000 Mpixels/sec
Difference: 4800 (30%)

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 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 4890 2GB

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 460 (OEM) Radeon HD 4890 2GB
Manufacturer nVidia AMD
Year October 2010 Apr 2, 2009
Code Name GF104 RV790 XT
Memory 1024 MB 2048 MB
Core Speed 650 MHz 1000 MHz
Memory Speed 3400 MHz 3900 MHz
Power (Max TDP) 150 watts 190 watts
Bandwidth 108800 MB/sec 124800 MB/sec
Texel Rate 36400 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 336 800(160x5)
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 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 largest amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 4890 2GB

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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