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GeForce 8800 GTS (G80) 320MB vs GeForce GTS 250 512MB

Intro

The GeForce 8800 GTS (G80) 320MB features a core clock speed of 513 MHz and a GDDR3 memory speed of 792 MHz. It also makes use of a 320-bit memory bus, and makes use of a 90 nm design. It is made up of 96 SPUs, 48 TAUs, and 20 Raster Operation Units.

Compare that to the GeForce GTS 250 512MB, which comes with a core clock frequency of 738 MHz and a GDDR3 memory speed of 1100 MHz. It also features a 256-bit memory bus, and uses a 65/55 nm design. It features 128 SPUs, 64 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 320MB 143 Watts
GeForce GTS 250 512MB 145 Watts
Difference: 2 Watts (1%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 250 512MB should in theory be a little bit better than the GeForce 8800 GTS (G80) 320MB in general. (explain)

GeForce GTS 250 512MB 70400 MB/sec
GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Difference: 7040 (11%)

Texel Rate

The GeForce GTS 250 512MB is much (approximately 92%) faster with regards to anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce GTS 250 512MB 47232 Mtexels/sec
GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Difference: 22608 (92%)

Pixel Rate

The GeForce GTS 250 512MB is just a bit (about 15%) better at AA than the GeForce 8800 GTS (G80) 320MB, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTS 250 512MB 11808 Mpixels/sec
GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Difference: 1548 (15%)

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 GTS (G80) 320MB

Amazon.com

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GeForce GTS 250 512MB

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 GTS (G80) 320MB GeForce GTS 250 512MB
Manufacturer nVidia nVidia
Year Feb 2007 March 3, 2009
Code Name G80 G92a/b
Memory 320 MB 512 MB
Core Speed 513 MHz 738 MHz
Memory Speed 1584 MHz 2200 MHz
Power (Max TDP) 143 watts 145 watts
Bandwidth 63360 MB/sec 70400 MB/sec
Texel Rate 24624 Mtexels/sec 47232 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 11808 Mpixels/sec
Unified Shaders 96 128
Texture Mapping Units 48 64
Render Output Units 20 16
Bus Type GDDR3 GDDR3
Bus Width 320-bit 256-bit
Fab Process 90 nm 65/55 nm
Transistors 681 million 754 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 can be applied per second. This figure is calculated 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels 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 colour ROPs 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 output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

GeForce GTS 250 512MB

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.

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