GeForce 825M vs GeForce GT 310

Intro

Compare all of that to the GeForce GT 310, which comes with core speeds of 589 MHz on the GPU, and 1000 MHz on the 512 MB of DDR2 memory. It features 16 SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 310		31 Watts
GeForce 825M		33 Watts
	Difference: 2 Watts (6%)

Memory Bandwidth

The GeForce GT 310 should theoretically perform just a bit faster than the GeForce 825M in general. (explain)

GeForce GT 310		16000 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The GeForce 825M will be much (approximately 189%) faster with regards to AF than the GeForce GT 310. (explain)

GeForce 825M		13600 Mtexels/sec
GeForce GT 310		4712 Mtexels/sec
	Difference: 8888 (189%)

Pixel Rate

The GeForce 825M should be much (more or less 189%) better at anti-aliasing than the GeForce GT 310, and should be able to handle higher resolutions more effectively. (explain)

GeForce 825M		6800 Mpixels/sec
GeForce GT 310		2356 Mpixels/sec
	Difference: 4444 (189%)

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.