GeForce GTX 460 vs GeForce GTX 465

Intro

Compare those specs to the GeForce GTX 465, which comes with a clock speed of 607 MHz and a GDDR5 memory frequency of 802 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is comprised of 352 SPUs, 44 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460		150 Watts
GeForce GTX 465		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

Performance-wise, the GeForce GTX 465 should in theory be a bit better than the GeForce GTX 460 in general. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GTX 460		86400 MB/sec
	Difference: 16192 (19%)

Texel Rate

The GeForce GTX 460 will be quite a bit (about 42%) faster with regards to AF than the GeForce GTX 465. (explain)

GeForce GTX 460		37800 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 11092 (42%)

Pixel Rate

The GeForce GTX 465 will be a small bit (approximately 20%) more effective at anti-aliasing than the GeForce GTX 460, and able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GTX 460		16200 Mpixels/sec
	Difference: 3224 (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: Bandwidth is the largest amount of data (measured in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.