GeForce 8500 GT vs GeForce GT 130

Intro

Compare that to the GeForce GT 130, which features a core clock frequency of 500 MHz and a DDR2 memory frequency of 250 MHz. It also uses a 192-bit memory bus, and makes use of a 55 nm design. It is made up of 48 SPUs, 24 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT		45 Watts
GeForce GT 130		75 Watts
	Difference: 30 Watts (67%)

Memory Bandwidth

Theoretically, the GeForce 8500 GT should perform a small bit faster than the GeForce GT 130 in general. (explain)

GeForce 8500 GT		12800 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 800 (7%)

Texel Rate

The GeForce GT 130 is quite a bit (more or less 233%) better at AF than the GeForce 8500 GT. (explain)

GeForce GT 130		12000 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 8400 (233%)

Pixel Rate

The GeForce GT 130 should be quite a bit (approximately 344%) better at anti-aliasing than the GeForce 8500 GT, and also should be able to handle higher resolutions better. (explain)

GeForce GT 130		8000 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 6200 (344%)

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 data (counted in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.