GeForce 825M vs GeForce GT 130

Intro

Compare those specifications to the GeForce GT 130, which has a clock speed of 500 MHz and a DDR2 memory frequency of 250 MHz. It also features a 192-bit memory bus, and uses a 55 nm design. It is comprised of 48 SPUs, 24 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M		33 Watts
GeForce GT 130		75 Watts
	Difference: 42 Watts (127%)

Memory Bandwidth

In theory, the GeForce 825M will be 20% quicker than the GeForce GT 130 overall, due to its higher bandwidth. (explain)

GeForce 825M		14400 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 2400 (20%)

Texel Rate

The GeForce 825M is a bit (more or less 13%) better at AF than the GeForce GT 130. (explain)

GeForce 825M		13600 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 1600 (13%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 130 is superior to the GeForce 825M, but it probably won't make a huge difference. (explain)

GeForce GT 130		8000 Mpixels/sec
GeForce 825M		6800 Mpixels/sec
	Difference: 1200 (18%)

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 (counted in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, 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 number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.