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GeForce 8800 GTX vs Radeon R7 250X

Intro

The GeForce 8800 GTX features a core clock speed of 575 MHz and a GDDR3 memory frequency of 900 MHz. It also features a 384-bit bus, and makes use of a 90 nm design. It is comprised of 128 SPUs, 64 TAUs, and 24 Raster Operation Units.

Compare those specs to the Radeon R7 250X, which has a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 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 perform just a bit faster than the Radeon R7 250X overall. (explain)

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

Texel Rate

The Radeon R7 250X is a bit (approximately 9%) better at texture filtering than the GeForce 8800 GTX. (explain)

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

Pixel Rate

The Radeon R7 250X will be a small bit (more or less 16%) better at anti-aliasing than the GeForce 8800 GTX, and also will be able to handle higher screen resolutions while still performing well. (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 largest amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units of the card 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max 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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