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GeForce GTX 460 1GB vs Radeon HD 6870


The GeForce GTX 460 1GB has a core clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 336 SPUs, 56 TAUs, and 32 ROPs.

Compare those specs to the Radeon HD 6870, which has a clock frequency of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also features a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1120 SPUs, 56 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6870 151 Watts
GeForce GTX 460 1GB 160 Watts
Difference: 9 Watts (6%)

Memory Bandwidth

The Radeon HD 6870 should theoretically perform a little bit faster than the GeForce GTX 460 1GB in general. (explain)

Radeon HD 6870 134400 MB/sec
GeForce GTX 460 1GB 115200 MB/sec
Difference: 19200 (17%)

Texel Rate

The Radeon HD 6870 is a lot (about 33%) more effective at texture filtering than the GeForce GTX 460 1GB. (explain)

Radeon HD 6870 50400 Mtexels/sec
GeForce GTX 460 1GB 37800 Mtexels/sec
Difference: 12600 (33%)

Pixel Rate

The Radeon HD 6870 is quite a bit (more or less 33%) better at FSAA than the GeForce GTX 460 1GB, and also should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6870 28800 Mpixels/sec
GeForce GTX 460 1GB 21600 Mpixels/sec
Difference: 7200 (33%)

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 1GB

Radeon HD 6870

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.


Display Specifications

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Model GeForce GTX 460 1GB Radeon HD 6870
Manufacturer nVidia AMD
Year July 2010 October 2010
Code Name GF104 Barts XT
Memory 1024 MB 1024 MB
Core Speed 675 MHz 900 MHz
Memory Speed 3600 MHz 4200 MHz
Power (Max TDP) 160 watts 151 watts
Bandwidth 115200 MB/sec 134400 MB/sec
Texel Rate 37800 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 336 1120
Texture Mapping Units 56 56
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 1950 million 1700 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the 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 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 the core 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 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 potential to reach the maximum fill rate.


One Response to “GeForce GTX 460 1GB vs Radeon HD 6870”
sam says:

Am a fan of Nvdia graphic cards i have an old 1gb 9400gt and i was planing to upgrade to the high performance Gtx to 150£ MAX but since am in this WEBSITE I thing am buying an Ati card they have better performance an cheaper then the Nvdia so am thinking 6870 is my choice

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