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GeForce GTX 260 vs Radeon HD 6450 (OEM)


The GeForce GTX 260 features a core clock frequency of 576 MHz and a GDDR3 memory speed of 999 MHz. It also uses a 448-bit memory bus, and uses a 65 nm design. It is comprised of 192 SPUs, 64 TAUs, and 28 Raster Operation Units.

Compare those specs to the Radeon HD 6450 (OEM), which comes with clock speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 160 SPUs along with 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce GTX 260 182 Watts
Difference: 151 Watts (487%)

Memory Bandwidth

In theory, the GeForce GTX 260 will be 774% quicker than the Radeon HD 6450 (OEM) overall, due to its higher data rate. (explain)

GeForce GTX 260 111888 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 99088 (774%)

Texel Rate

The GeForce GTX 260 should be quite a bit (more or less 637%) better at AF than the Radeon HD 6450 (OEM). (explain)

GeForce GTX 260 36864 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 31864 (637%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 260 is superior to the Radeon HD 6450 (OEM), by a large margin. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 13628 (545%)

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

Radeon HD 6450 (OEM)

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 260 Radeon HD 6450 (OEM)
Manufacturer nVidia AMD
Year June 16, 2008 February 2011
Code Name G200 Caicos
Memory 896 MB 512 MB
Core Speed 576 MHz 625 MHz
Memory Speed 1998 MHz 1600 MHz
Power (Max TDP) 182 watts 31 watts
Bandwidth 111888 MB/sec 12800 MB/sec
Texel Rate 36864 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 192 160
Texture Mapping Units 64 8
Render Output Units 28 4
Bus Type GDDR3 GDDR3
Bus Width 448-bit 64-bit
Fab Process 65 nm 40 nm
Transistors 1400 million 370 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount 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 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 in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.


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