GeForce GT 320 vs GeForce GTS 250 512MB

Intro

Compare all that to the GeForce GTS 250 512MB, which features GPU core speed of 738 MHz, and 512 MB of GDDR3 memory running at 1100 MHz through a 256-bit bus. It also is comprised of 128 Stream Processors, 64 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTS 250 512MB		145 Watts
	Difference: 102 Watts (237%)

Memory Bandwidth

Performance-wise, the GeForce GTS 250 512MB should theoretically be quite a bit superior to the GeForce GT 320 overall. (explain)

GeForce GTS 250 512MB		70400 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 45120 (178%)

Texel Rate

The GeForce GTS 250 512MB should be a lot (approximately 264%) more effective at AF than the GeForce GT 320. (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 34272 (264%)

Pixel Rate

The GeForce GTS 250 512MB should be much (more or less 173%) faster with regards to anti-aliasing than the GeForce GT 320, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTS 250 512MB		11808 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 7488 (173%)

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 (counted in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at 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 the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.