GeForce GTX 465 vs Radeon HD 3650 256MB

Intro

Compare those specs to the Radeon HD 3650 256MB, which uses a 55 nm design. AMD has set the core frequency at 725 MHz. The DDR2 memory works at a frequency of 800 MHz on this particular model. It features 120(24x5) SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB		78 Watts
GeForce GTX 465		200 Watts
	Difference: 122 Watts (156%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 465 is 301% quicker than the Radeon HD 3650 256MB overall, due to its higher bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 76992 (301%)

Texel Rate

The GeForce GTX 465 should be a lot (about 360%) better at texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 20908 (360%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 465 is superior to the Radeon HD 3650 256MB, by far. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 3650 256MB		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 (in units of MB per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.