GeForce GTX 260 vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which comes with GPU clock speed of 607 MHz, and 1024 MB of GDDR5 RAM set to run at 802 MHz through a 256-bit bus. It also features 352 SPUs, 44 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260		182 Watts
GeForce GTX 465		200 Watts
	Difference: 18 Watts (10%)

Memory Bandwidth

In theory, the GeForce GTX 260 should be 9% quicker than the GeForce GTX 465 in general, due to its higher data rate. (explain)

GeForce GTX 260		111888 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 9296 (9%)

Texel Rate

The GeForce GTX 260 is quite a bit (more or less 38%) more effective at texture filtering than the GeForce GTX 465. (explain)

GeForce GTX 260		36864 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 10156 (38%)

Pixel Rate

The GeForce GTX 465 should be just a bit (approximately 20%) better at full screen anti-aliasing than the GeForce GTX 260, and will be capable of handling higher resolutions better. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GTX 260		16128 Mpixels/sec
	Difference: 3296 (20%)

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 maximum amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 amount 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 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.