GeForce GT 315 vs GeForce GTX 480

Intro

Compare those specifications to the GeForce GTX 480, which comes with core speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 memory. It features 480 SPUs along with 60 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GTX 480		250 Watts
	Difference: 198 Watts (381%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 480 will be 602% faster than the GeForce GT 315 overall, due to its greater data rate. (explain)

GeForce GTX 480		177408 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 152128 (602%)

Texel Rate

The GeForce GTX 480 should be a lot (about 320%) faster with regards to AF than the GeForce GT 315. (explain)

GeForce GTX 480		42000 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 32000 (320%)

Pixel Rate

The GeForce GTX 480 should be quite a bit (more or less 572%) more effective at full screen anti-aliasing than the GeForce GT 315, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 28600 (572%)

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 maximum amount of information (measured in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 are applied in one second. This number is calculated by multiplying the total amount of texture units 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 applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.