GeForce GTX 275 vs GeForce GTX 465

Intro

Compare those specs to the GeForce GTX 465, which has core clock 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

In theory, the GeForce GTX 275 should be 24% faster than the GeForce GTX 465 in general, due to its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 275 is a lot (more or less 90%) more effective at texture filtering than the GeForce GTX 465. (explain)

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

Pixel Rate

The GeForce GTX 465 is just a bit (more or less 10%) more effective at anti-aliasing than the GeForce GTX 275, and should be capable of handling higher resolutions without losing too much performance. (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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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