GeForce GTX 260 vs GeForce GTX 465

Intro

Compare all that to the GeForce GTX 465, which makes use of a 40 nm design. nVidia has clocked the core frequency at 607 MHz. The GDDR5 memory is set to run at a speed of 802 MHz on this particular card. It features 352 SPUs as well as 44 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 perform a bit faster than the GeForce GTX 465 overall. (explain)

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

Texel Rate

The GeForce GTX 260 is much (about 38%) better at AF 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 a bit (about 20%) faster with regards to AA than the GeForce GTX 260, and should be able to handle higher screen resolutions without slowing down too much. (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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.