GeForce GT 315 vs GeForce GTX 750

Intro

Compare all of that to the GeForce GTX 750, which features a clock frequency of 1020 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GTX 750		55 Watts
	Difference: 3 Watts (6%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 750 should be 216% quicker than the GeForce GT 315 overall, due to its higher data rate. (explain)

GeForce GTX 750		80000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 54720 (216%)

Texel Rate

The GeForce GTX 750 should be quite a bit (more or less 226%) more effective at AF than the GeForce GT 315. (explain)

GeForce GTX 750		32640 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 22640 (226%)

Pixel Rate

The GeForce GTX 750 will be much (about 226%) faster with regards to full screen anti-aliasing than the GeForce GT 315, and also capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 750		16320 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 11320 (226%)

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 (in units of MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 can be processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.