GeForce GT 240 GDDR5 vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which features GPU clock speed of 1046 MHz, and 2048 MB of GDDR5 memory running at 1753 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 128 Texture Address Units, 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 770		230 Watts
	Difference: 160 Watts (229%)

Memory Bandwidth

Theoretically, the Geforce GTX 770 should be a lot faster than the GeForce GT 240 GDDR5 overall. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 169984 (312%)

Texel Rate

The Geforce GTX 770 will be quite a bit (approximately 661%) more effective at AF than the GeForce GT 240 GDDR5. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 116288 (661%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 770 is superior to the GeForce GT 240 GDDR5, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 29072 (661%)

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 largest amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock 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 the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.