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GeForce GTX 460 vs Radeon HD 6870

Intro

The GeForce GTX 460 has clock speeds of 675 MHz on the GPU, and 900 MHz on the 768 MB of GDDR5 memory. It features 336 SPUs as well as 56 TAUs and 24 ROPs.

Compare all that to the Radeon HD 6870, which makes use of a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 RAM runs at a frequency of 1050 MHz on this particular model. It features 1120 SPUs as well as 56 TAUs and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6870 2870 points
GeForce GTX 460 2557 points
Difference: 313 (12%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 150 Watts
Radeon HD 6870 151 Watts
Difference: 1 Watts (1%)

Memory Bandwidth

The Radeon HD 6870 should theoretically perform a lot faster than the GeForce GTX 460 overall. (explain)

Radeon HD 6870 134400 MB/sec
GeForce GTX 460 86400 MB/sec
Difference: 48000 (56%)

Texel Rate

The Radeon HD 6870 is quite a bit (approximately 33%) better at texture filtering than the GeForce GTX 460. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 6870 is superior to the GeForce GTX 460, by far. (explain)

Radeon HD 6870 28800 Mpixels/sec
GeForce GTX 460 16200 Mpixels/sec
Difference: 12600 (78%)

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

Amazon.com

Check prices at:

Radeon HD 6870

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 Radeon HD 6870
Manufacturer nVidia AMD
Year July 2010 October 2010
Code Name GF104 Barts XT
Memory 768 MB 1024 MB
Core Speed 675 MHz 900 MHz
Memory Speed 3600 MHz 4200 MHz
Power (Max TDP) 150 watts 151 watts
Bandwidth 86400 MB/sec 134400 MB/sec
Texel Rate 37800 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 16200 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 336 1120
Texture Mapping Units 56 56
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-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 largest amount of information (counted in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the 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 in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 460

Amazon.com

Check prices at:

Radeon HD 6870

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.

Comments

One Response to “GeForce GTX 460 vs Radeon HD 6870”
HellbiaX decide di avvicinarsi ai PC Assemblati - Pagina 3 - Forum di Tom's Hardware says:

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