GeForce GTX 465 vs Radeon HD 3650

Intro

Compare those specifications to the Radeon HD 3650, which has clock speeds of 725 MHz on the GPU, and 800 MHz on the 1024 MB of GDDR4 memory. It features 120(24x5) SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
GeForce GTX 465		200 Watts
	Difference: 122 Watts (156%)

Memory Bandwidth

The GeForce GTX 465 should theoretically perform much faster than the Radeon HD 3650 in general. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 76992 (301%)

Texel Rate

The GeForce GTX 465 is quite a bit (about 360%) better at AF than the Radeon HD 3650. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 20908 (360%)

Pixel Rate

The GeForce GTX 465 should be quite a bit (about 570%) better at AA than the Radeon HD 3650, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 16524 (570%)

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 maximum amount of data (counted in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.