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GeForce GTX 275 vs GeForce GTX 280

Intro

The GeForce GTX 275 comes with core speeds of 633 MHz on the GPU, and 1134 MHz on the 896 MB of GDDR3 RAM. It features 240 SPUs along with 80 Texture Address Units and 28 ROPs.

Compare those specifications to the GeForce GTX 280, which features core speeds of 602 MHz on the GPU, and 1107 MHz on the 1024 MB of GDDR3 RAM. It features 240 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 275 219 Watts
GeForce GTX 280 236 Watts
Difference: 17 Watts (8%)

Memory Bandwidth

The GeForce GTX 280, in theory, should be a little bit faster than the GeForce GTX 275 in general. (explain)

GeForce GTX 280 141696 MB/sec
GeForce GTX 275 127008 MB/sec
Difference: 14688 (12%)

Texel Rate

The GeForce GTX 275 should be a bit (approximately 5%) better at texture filtering than the GeForce GTX 280. (explain)

GeForce GTX 275 50640 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 2480 (5%)

Pixel Rate

The GeForce GTX 280 will be a bit (approximately 9%) faster with regards to FSAA than the GeForce GTX 275, and also should be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 280 19264 Mpixels/sec
GeForce GTX 275 17724 Mpixels/sec
Difference: 1540 (9%)

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 275

Amazon.com

Check prices at:

GeForce GTX 280

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

Display Specifications

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Model GeForce GTX 275 GeForce GTX 280
Manufacturer nVidia nVidia
Year April 9, 2009 June 17, 2008
Code Name G200b G200
Memory 896 MB 1024 MB
Core Speed 633 MHz 602 MHz
Memory Speed 2268 MHz 2214 MHz
Power (Max TDP) 219 watts 236 watts
Bandwidth 127008 MB/sec 141696 MB/sec
Texel Rate 50640 Mtexels/sec 48160 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 19264 Mpixels/sec
Unified Shaders 240 240
Texture Mapping Units 80 80
Render Output Units 28 32
Bus Type GDDR3 GDDR3
Bus Width 448-bit 512-bit
Fab Process 55 nm 65 nm
Transistors 1400 million 1400 million
Bus PCIe x16 2.0 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.1 OpenGL 3.1

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 275

Amazon.com

Check prices at:

GeForce GTX 280

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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