GeForce GTX 465 vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which features GPU clock speed of 1046 MHz, and 2048 MB of GDDR5 memory set to run at 1753 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
Geforce GTX 770		230 Watts
	Difference: 30 Watts (15%)

Memory Bandwidth

The Geforce GTX 770 should theoretically perform quite a bit faster than the GeForce GTX 465 overall. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 121792 (119%)

Texel Rate

The Geforce GTX 770 is quite a bit (approximately 401%) better at AF than the GeForce GTX 465. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 107180 (401%)

Pixel Rate

The Geforce GTX 770 should be much (about 72%) more effective at AA than the GeForce GTX 465, and also capable of handling higher screen resolutions while still performing well. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 14048 (72%)

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 max amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.