GeForce GT 240 GDDR5 vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which makes use of a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 RAM runs at a frequency of 802 MHz on this model. It features 352 SPUs along with 44 TAUs and 32 ROPs.

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

The GeForce GTX 465 should theoretically be a lot faster than the GeForce GT 240 GDDR5 in general. (explain)

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

Texel Rate

The GeForce GTX 465 will be quite a bit (approximately 52%) more effective 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 a lot (approximately 341%) more effective at full screen anti-aliasing than the GeForce GT 240 GDDR5, and 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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total 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 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 the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 bandwidth is, the lower the ability to get to the max fill rate.