GeForce GTX 465 vs GeForce GTX 650

Intro

Compare those specifications to the GeForce GTX 650, which comes with a core clock speed of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is made up of 384 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 465		200 Watts
	Difference: 136 Watts (213%)

Memory Bandwidth

The GeForce GTX 465 should theoretically perform quite a bit faster than the GeForce GTX 650 in general. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 22592 (28%)

Texel Rate

The GeForce GTX 650 is a lot (more or less 27%) better at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 7148 (27%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 465 is the winner, but not by far. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 2496 (15%)

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 megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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