GeForce GT 340 vs GeForce GTX 285 1GB

Intro

Compare that to the GeForce GTX 285 1GB, which makes use of a 55 nm design. nVidia has set the core frequency at 648 MHz. The GDDR3 RAM runs at a frequency of 1242 MHz on this card. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 135 Watts (196%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB should be 192% quicker than the GeForce GT 340 overall, because of its higher data rate. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 104576 (192%)

Texel Rate

The GeForce GTX 285 1GB will be much (more or less 195%) faster with regards to AF than the GeForce GT 340. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 34240 (195%)

Pixel Rate

The GeForce GTX 285 1GB should be quite a bit (about 371%) better at anti-aliasing than the GeForce GT 340, and able to handle higher resolutions better. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 16336 (371%)

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 max amount of data (measured in MB per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range 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 texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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