GeForce GT 340 1GB vs GeForce GTX 650

Intro

Compare that to the GeForce GTX 650, which features a core clock frequency of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It features 384 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 5 Watts (8%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 should in theory be much better than the GeForce GT 340 1GB in general. (explain)

GeForce GTX 650		80000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 25600 (47%)

Texel Rate

The GeForce GTX 650 is a lot (approximately 92%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 16256 (92%)

Pixel Rate

The GeForce GTX 650 is a lot (more or less 285%) more effective at FSAA than the GeForce GT 340 1GB, and will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 12528 (285%)

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 information (in units of megabytes per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must 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 higher screen resolutions.

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

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