GeForce GTX 275 vs GeForce GTX 650 Ti

Intro

Compare those specifications to the GeForce GTX 650 Ti, which features core speeds of 928 MHz on the GPU, and 1350 MHz on the 1024 MB of GDDR5 RAM. It features 768 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
GeForce GTX 275		219 Watts
	Difference: 109 Watts (99%)

Memory Bandwidth

In theory, the GeForce GTX 275 will be 47% faster than the GeForce GTX 650 Ti in general, because of its greater data rate. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 40608 (47%)

Texel Rate

The GeForce GTX 650 Ti should be a small bit (approximately 17%) more effective at texture filtering than the GeForce GTX 275. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 8752 (17%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 275 is a better choice, but it probably won't make a huge difference. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GTX 650 Ti		14848 Mpixels/sec
	Difference: 2876 (19%)

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 largest amount of information (counted in MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.