GeForce GT 240 GDDR5 vs GeForce GTX 465

Intro

Compare all of that to the GeForce GTX 465, which has a core clock frequency of 607 MHz and a GDDR5 memory frequency of 802 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It features 352 SPUs, 44 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
GeForce GTX 465		200 Watts
	Difference: 130 Watts (186%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 465 should be 89% quicker than the GeForce GT 240 GDDR5 overall, because of its higher bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 48192 (89%)

Texel Rate

The GeForce GTX 465 should be a lot (about 52%) better at texture filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 465		26708 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 9108 (52%)

Pixel Rate

The GeForce GTX 465 should be much (about 341%) faster with regards to FSAA than the GeForce GT 240 GDDR5, and also should be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 15024 (341%)

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 data (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could 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 Render Output Units 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 output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.