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 as well as 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 in theory perform much faster than the Radeon HD 3650 overall. (explain)

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

Texel Rate

The GeForce GTX 465 will be much (more or less 360%) better at anisotropic filtering 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 will be a lot (approximately 570%) faster with regards to AA than the Radeon HD 3650, and capable of handling higher screen resolutions while still performing well. (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 max amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.