GeForce GT 315 vs GeForce GTX 470

Intro

Compare all that to the GeForce GTX 470, which features GPU core speed of 607 MHz, and 1280 MB of GDDR5 RAM set to run at 837 MHz through a 320-bit bus. It also features 448 SPUs, 56 Texture Address Units, and 40 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GTX 470		215 Watts
	Difference: 163 Watts (313%)

Memory Bandwidth

In theory, the GeForce GTX 470 should be quite a bit faster than the GeForce GT 315 in general. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 108640 (430%)

Texel Rate

The GeForce GTX 470 is a lot (more or less 240%) more effective at anisotropic filtering than the GeForce GT 315. (explain)

GeForce GTX 470		33992 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 23992 (240%)

Pixel Rate

The GeForce GTX 470 should be much (approximately 386%) faster with regards to anti-aliasing than the GeForce GT 315, and should be able to handle higher resolutions better. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 19280 (386%)

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 largest amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the 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 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 worked out by multiplying the number of Raster Operations Pipelines by the clock 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 rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.