GeForce GTX 660 Ti vs Radeon HD 3650

Intro

Compare those specifications to the Radeon HD 3650, which comes with a core clock speed of 725 MHz and a GDDR4 memory frequency of 800 MHz. It also makes use of a 128-bit memory bus, and uses a 55 nm design. It is comprised of 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 72 Watts (92%)

Memory Bandwidth

The GeForce GTX 660 Ti, in theory, should perform a lot faster than the Radeon HD 3650 in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 118400 (463%)

Texel Rate

The GeForce GTX 660 Ti is much (about 1667%) better at anisotropic filtering than the Radeon HD 3650. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 96680 (1667%)

Pixel Rate

The GeForce GTX 660 Ti should be much (approximately 657%) more effective at anti-aliasing than the Radeon HD 3650, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 19060 (657%)

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 (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs 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 is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.