GeForce GT 240 GDDR5 1GB vs Geforce GTX 690

Intro

Compare those specifications to the Geforce GTX 690, which has a core clock frequency of 915 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is made up of 1536 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
Geforce GTX 690		300 Watts
	Difference: 230 Watts (329%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 690 should be 607% quicker than the GeForce GT 240 GDDR5 1GB in general, because of its greater data rate. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 330112 (607%)

Texel Rate

The Geforce GTX 690 will be quite a bit (approximately 1231%) more effective at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 216640 (1231%)

Pixel Rate

If running with high levels of AA is important to you, then the Geforce GTX 690 is a better choice, by a large margin. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 54160 (1231%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.