GeForce GT 340 1GB vs Radeon HD 3650 256MB

Intro

Compare those specifications to the Radeon HD 3650 256MB, which comes with a core clock frequency of 725 MHz and a DDR2 memory speed of 800 MHz. It also makes use of a 128-bit bus, and uses a 55 nm design. It is comprised of 120(24x5) SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon HD 3650 256MB		78 Watts
	Difference: 9 Watts (13%)

Memory Bandwidth

The GeForce GT 340 1GB should theoretically be much faster than the Radeon HD 3650 256MB overall. (explain)

GeForce GT 340 1GB		54400 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 28800 (113%)

Texel Rate

The GeForce GT 340 1GB is a lot (approximately 203%) faster with regards to texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 11800 (203%)

Pixel Rate

The GeForce GT 340 1GB is much (approximately 52%) more effective at FSAA than the Radeon HD 3650 256MB, and able to handle higher screen resolutions better. (explain)

GeForce GT 340 1GB		4400 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 1500 (52%)

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 (counted in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.