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GeForce GTX 275 vs GeForce GTX 465

Intro

The GeForce GTX 275 comes with a GPU core speed of 633 MHz, and the 896 MB of GDDR3 RAM runs at 1134 MHz through a 448-bit bus. It also is comprised of 240 Stream Processors, 80 Texture Address Units, and 28 ROPs.

Compare those specs to the GeForce GTX 465, which features core speeds of 607 MHz on the GPU, and 802 MHz on the 1024 MB of GDDR5 memory. It features 352 SPUs along with 44 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465 200 Watts
GeForce GTX 275 219 Watts
Difference: 19 Watts (10%)

Memory Bandwidth

The GeForce GTX 275 should theoretically be much faster than the GeForce GTX 465 in general. (explain)

GeForce GTX 275 127008 MB/sec
GeForce GTX 465 102592 MB/sec
Difference: 24416 (24%)

Texel Rate

The GeForce GTX 275 will be much (about 90%) more effective at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 275 50640 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 23932 (90%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 465 is a better choice, but not by far. (explain)

GeForce GTX 465 19424 Mpixels/sec
GeForce GTX 275 17724 Mpixels/sec
Difference: 1700 (10%)

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 465

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 GTX 275 GeForce GTX 465
Manufacturer nVidia nVidia
Year April 9, 2009 May 2010
Code Name G200b GF100
Memory 896 MB 1024 MB
Core Speed 633 MHz 607 MHz
Memory Speed 2268 MHz 3208 MHz
Power (Max TDP) 219 watts 200 watts
Bandwidth 127008 MB/sec 102592 MB/sec
Texel Rate 50640 Mtexels/sec 26708 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 19424 Mpixels/sec
Unified Shaders 240 352
Texture Mapping Units 80 44
Render Output Units 28 32
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 3000 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 275

Amazon.com

Check prices at:

GeForce GTX 465

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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