GeForce GT 315 vs Radeon HD 3650

Intro

Compare those specifications to the Radeon HD 3650, which makes use of a 55 nm design. AMD has clocked the core speed at 725 MHz. The GDDR4 RAM is set to run at a speed of 800 MHz on this specific card. It features 120(24x5) SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
Radeon HD 3650		78 Watts
	Difference: 26 Watts (50%)

Memory Bandwidth

The Radeon HD 3650, in theory, should be just a bit faster than the GeForce GT 315 in general. (explain)

Radeon HD 3650		25600 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 320 (1%)

Texel Rate

The GeForce GT 315 will be much (about 72%) faster with regards to texture filtering than the Radeon HD 3650. (explain)

GeForce GT 315		10000 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 4200 (72%)

Pixel Rate

The GeForce GT 315 will be much (approximately 72%) faster with regards to full screen anti-aliasing than the Radeon HD 3650, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce GT 315		5000 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 2100 (72%)

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 max amount of information (in units of MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.