GeForce GTX 560 Ti 448 vs GeForce GTX 650

Intro

Compare that to the GeForce GTX 650, which uses a 28 nm design. nVidia has clocked the core frequency at 1058 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this specific card. It features 384 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 146 Watts (228%)

Memory Bandwidth

In theory, the GeForce GTX 560 Ti 448 is 80% faster than the GeForce GTX 650 in general, because of its greater data rate. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 64000 (80%)

Texel Rate

The GeForce GTX 560 Ti 448 should be much (about 21%) more effective at texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 7136 (21%)

Pixel Rate

The GeForce GTX 560 Ti 448 should be quite a bit (approximately 73%) faster with regards to full screen anti-aliasing than the GeForce GTX 650, and capable of handling higher resolutions better. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 12352 (73%)

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 (in units of MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.