GeForce GT 340 vs GeForce GTX 295

Intro

Compare those specifications to the GeForce GTX 295, which makes use of a 55 nm design. nVidia has clocked the core frequency at 576 MHz. The GDDR3 RAM works at a speed of 999 MHz on this particular model. It features 240 SPUs as well as 80 Texture Address Units and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce GTX 295		289 Watts
	Difference: 220 Watts (319%)

Memory Bandwidth

The GeForce GTX 295 should in theory perform quite a bit faster than the GeForce GT 340 overall. (explain)

GeForce GTX 295		223776 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 169376 (311%)

Texel Rate

The GeForce GTX 295 should be quite a bit (more or less 424%) better at texture filtering than the GeForce GT 340. (explain)

GeForce GTX 295		92160 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 74560 (424%)

Pixel Rate

The GeForce GTX 295 is a lot (approximately 633%) faster with regards to AA than the GeForce GT 340, and able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 295		32256 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 27856 (633%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.