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GeForce 8800 GTX vs Radeon R7 250X

Intro

The GeForce 8800 GTX makes use of a 90 nm design. nVidia has clocked the core speed at 575 MHz. The GDDR3 memory is set to run at a frequency of 900 MHz on this particular model. It features 128 SPUs along with 64 TAUs and 24 Rasterization Operator Units.

Compare all of that to the Radeon R7 250X, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 95 Watts
GeForce 8800 GTX 155 Watts
Difference: 60 Watts (63%)

Memory Bandwidth

In theory, the GeForce 8800 GTX should be 20% quicker than the Radeon R7 250X overall, due to its higher bandwidth. (explain)

GeForce 8800 GTX 86400 MB/sec
Radeon R7 250X 72000 MB/sec
Difference: 14400 (20%)

Texel Rate

The Radeon R7 250X should be just a bit (more or less 9%) more effective at anisotropic filtering than the GeForce 8800 GTX. (explain)

Radeon R7 250X 40000 Mtexels/sec
GeForce 8800 GTX 36800 Mtexels/sec
Difference: 3200 (9%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R7 250X is superior to the GeForce 8800 GTX, though only just barely. (explain)

Radeon R7 250X 16000 Mpixels/sec
GeForce 8800 GTX 13800 Mpixels/sec
Difference: 2200 (16%)

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 8800 GTX

Amazon.com

Check prices at:

Radeon R7 250X

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 8800 GTX Radeon R7 250X
Manufacturer nVidia AMD
Year Nov 2006 February 2014
Code Name G80 Cape Verde XT
Memory 768 MB 1024 MB
Core Speed 575 MHz 1000 MHz
Memory Speed 1800 MHz 4500 MHz
Power (Max TDP) 155 watts 95 watts
Bandwidth 86400 MB/sec 72000 MB/sec
Texel Rate 36800 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 128 640
Texture Mapping Units 64 40
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 384-bit 128-bit
Fab Process 90 nm 28 nm
Transistors 681 million 1500 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, 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 maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTX

Amazon.com

Check prices at:

Radeon R7 250X

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 8800 GTX vs Radeon R7 250X”
Anonymous says:

Bitches be buying Ati cards 😀

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