GeForce GT 315 vs Radeon HD 7950

Intro

Compare those specifications to the Radeon HD 7950, which makes use of a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this specific card. It features 1792 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
Radeon HD 7950		200 Watts
	Difference: 148 Watts (285%)

Memory Bandwidth

Theoretically, the Radeon HD 7950 should be quite a bit faster than the GeForce GT 315 overall. (explain)

Radeon HD 7950		240000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 214720 (849%)

Texel Rate

The Radeon HD 7950 should be quite a bit (about 796%) faster with regards to texture filtering than the GeForce GT 315. (explain)

Radeon HD 7950		89600 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 79600 (796%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7950 is a better choice, by far. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 20600 (412%)

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 information (in units of MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.