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GeForce GTX 260 vs GeForce GTX 460 (OEM)

Intro

The GeForce GTX 260 uses a 65 nm design. nVidia has set the core frequency at 576 MHz. The GDDR3 memory is set to run at a speed of 999 MHz on this card. It features 192 SPUs along with 64 Texture Address Units and 28 Rasterization Operator Units.

Compare those specifications to the GeForce GTX 460 (OEM), which comes with GPU core speed of 650 MHz, and 1024 MB of GDDR5 RAM running at 850 MHz through a 256-bit bus. It also is made up of 336 SPUs, 56 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM) 150 Watts
GeForce GTX 260 182 Watts
Difference: 32 Watts (21%)

Memory Bandwidth

Performance-wise, the GeForce GTX 260 should theoretically be a bit superior to the GeForce GTX 460 (OEM) overall. (explain)

GeForce GTX 260 111888 MB/sec
GeForce GTX 460 (OEM) 108800 MB/sec
Difference: 3088 (3%)

Texel Rate

The GeForce GTX 260 will be just a bit (about 1%) faster with regards to anisotropic filtering than the GeForce GTX 460 (OEM). (explain)

GeForce GTX 260 36864 Mtexels/sec
GeForce GTX 460 (OEM) 36400 Mtexels/sec
Difference: 464 (1%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 460 (OEM) is the winner, by far. (explain)

GeForce GTX 460 (OEM) 20800 Mpixels/sec
GeForce GTX 260 16128 Mpixels/sec
Difference: 4672 (29%)

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 260

Amazon.com

GeForce GTX 460 (OEM)

Amazon.com

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 260 GeForce GTX 460 (OEM)
Manufacturer nVidia nVidia
Year June 16, 2008 October 2010
Code Name G200 GF104
Memory 896 MB 1024 MB
Core Speed 576 MHz 650 MHz
Memory Speed 1998 MHz 3400 MHz
Power (Max TDP) 182 watts 150 watts
Bandwidth 111888 MB/sec 108800 MB/sec
Texel Rate 36864 Mtexels/sec 36400 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 20800 Mpixels/sec
Unified Shaders 192 336
Texture Mapping Units 64 56
Render Output Units 28 32
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 65 nm 40 nm
Transistors 1400 million 1950 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

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