GeForce GT 315 vs Radeon HD 3650 256MB

Intro

Compare that to the Radeon HD 3650 256MB, which comes with GPU clock speed of 725 MHz, and 256 MB of DDR2 memory running at 800 MHz through a 128-bit bus. It also is comprised of 120(24x5) Stream Processors, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
Radeon HD 3650 256MB		78 Watts
	Difference: 26 Watts (50%)

Memory Bandwidth

In theory, the Radeon HD 3650 256MB should perform a small bit faster than the GeForce GT 315 overall. (explain)

Radeon HD 3650 256MB		25600 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 320 (1%)

Texel Rate

The GeForce GT 315 will be much (about 72%) faster with regards to texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce GT 315		10000 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 4200 (72%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 315 is superior to the Radeon HD 3650 256MB, by far. (explain)

GeForce GT 315		5000 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 2100 (72%)

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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.