GeForce GT 340 vs Geforce GTX 770

Intro

Compare all that to the Geforce GTX 770, which has a GPU core clock speed of 1046 MHz, and 2048 MB of GDDR5 memory set to run at 1753 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

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

Theoretically speaking, the Geforce GTX 770 should be quite a bit faster than the GeForce GT 340 overall. (explain)

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

Texel Rate

The Geforce GTX 770 should be much (more or less 661%) better at AF than the GeForce GT 340. (explain)

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

Pixel Rate

The Geforce GTX 770 will be quite a bit (more or less 661%) faster with regards to anti-aliasing than the GeForce GT 340, and capable of handling higher screen resolutions while still performing well. (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 (counted in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. 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 potential to reach the max fill rate.