GeForce GT 340 vs Geforce GTX 770

Intro

Compare all of that to the Geforce GTX 770, which features clock speeds of 1046 MHz on the GPU, and 1753 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Geforce GTX 770		230 Watts
	Difference: 161 Watts (233%)

Memory Bandwidth

In theory, the Geforce GTX 770 will be 312% faster than the GeForce GT 340 in general, because of its greater data rate. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 169984 (312%)

Texel Rate

The Geforce GTX 770 will be quite a bit (more or less 661%) more effective at anisotropic filtering than the GeForce GT 340. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 116288 (661%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 770 is superior to the GeForce GT 340, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GT 340		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 (measured in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.