GeForce GT 320 vs GeForce GTS 250 1GB

Intro

Compare all that to the GeForce GTS 250 1GB, which has a core clock speed of 738 MHz and a GDDR3 memory frequency of 1100 MHz. It also uses a 256-bit memory bus, and uses a 65/55 nm design. It is comprised of 128 SPUs, 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 1GB		145 Watts
	Difference: 102 Watts (237%)

Memory Bandwidth

Performance-wise, the GeForce GTS 250 1GB should theoretically be a lot superior to the GeForce GT 320 in general. (explain)

GeForce GTS 250 1GB		70400 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 45120 (178%)

Texel Rate

The GeForce GTS 250 1GB is much (more or less 264%) more effective at AF than the GeForce GT 320. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 34272 (264%)

Pixel Rate

The GeForce GTS 250 1GB should be a lot (approximately 173%) more effective at FSAA than the GeForce GT 320, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTS 250 1GB		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 max amount of data (counted in megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, 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 maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.