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GeForce GTX 260 vs Radeon R7 250

Intro

The GeForce GTX 260 has a clock speed of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also uses a 448-bit bus, and makes use of a 65 nm design. It is made up of 192 SPUs, 64 TAUs, and 28 ROPs.

Compare those specs to the Radeon R7 250, which has GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM set to run at 1150 MHz through a 128-bit bus. It also is made up of 384 Stream Processors, 24 TAUs, and 8 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250 65 Watts
GeForce GTX 260 182 Watts
Difference: 117 Watts (180%)

Memory Bandwidth

The GeForce GTX 260 should in theory be a lot faster than the Radeon R7 250 in general. (explain)

GeForce GTX 260 111888 MB/sec
Radeon R7 250 73600 MB/sec
Difference: 38288 (52%)

Texel Rate

The GeForce GTX 260 should be a lot (about 54%) more effective at AF than the Radeon R7 250. (explain)

GeForce GTX 260 36864 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 12864 (54%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 260 is superior to the Radeon R7 250, by a large margin. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 8128 (102%)

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

GeForce GTX 260

Amazon.com

Radeon R7 250

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

Model GeForce GTX 260 Radeon R7 250
Manufacturer nVidia AMD
Year June 16, 2008 October 2013
Code Name G200 Oland XT
Fab Process 65 nm 28 nm
Bus PCIe x16 2.0 PCIe 3.0 x16
Memory 896 MB 1024 MB
Core Speed 576 MHz 1000 MHz
Shader Speed 1242 MHz (N/A) MHz
Memory Speed 999 MHz (1998 MHz effective) 1150 MHz (4600 MHz effective)
Unified Shaders 192 384
Texture Mapping Units 64 24
Render Output Units 28 8
Bus Type GDDR3 GDDR5
Bus Width 448-bit 128-bit
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.1 OpenGL 4.3
Power (Max TDP) 182 watts 65 watts
Shader Model 4.0 5.0
Bandwidth 111888 MB/sec 73600 MB/sec
Texel Rate 36864 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 8000 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few 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.

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