GeForce 9800 GTX+ vs GeForce GT 340

Intro

Compare those specs to the GeForce GT 340, which comes with a core clock speed of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It features 96 SPUs, 32 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 76 Watts (110%)

Memory Bandwidth

In theory, the GeForce 9800 GTX+ will be 29% quicker than the GeForce GT 340 overall, because of its greater data rate. (explain)

GeForce 9800 GTX+		70400 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 16000 (29%)

Texel Rate

The GeForce 9800 GTX+ is a lot (about 168%) better at texture filtering than the GeForce GT 340. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 29632 (168%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 9800 GTX+ is the winner, by a large margin. (explain)

GeForce 9800 GTX+		11808 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 7408 (168%)

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 transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should 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 number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at 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 the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many 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.