GeForce GTX 750 vs Radeon HD 3650 512MB

Intro

Compare that to the Radeon HD 3650 512MB, which features a core clock frequency of 725 MHz and a GDDR3 memory frequency of 800 MHz. It also features a 128-bit memory bus, and makes use of a 55 nm design. It features 120(24x5) SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 3650 512MB		78 Watts
	Difference: 23 Watts (42%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 750 should perform quite a bit faster than the Radeon HD 3650 512MB in general. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 54400 (213%)

Texel Rate

The GeForce GTX 750 will be quite a bit (about 463%) better at texture filtering than the Radeon HD 3650 512MB. (explain)

GeForce GTX 750		32640 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 26840 (463%)

Pixel Rate

The GeForce GTX 750 should be much (approximately 463%) better at full screen anti-aliasing than the Radeon HD 3650 512MB, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon HD 3650 512MB		2900 Mpixels/sec
	Difference: 13420 (463%)

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: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 applied per second. This number is calculated by multiplying the total amount of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few 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.