GeForce GTX 560 vs Radeon HD 3650 256MB

Intro

Compare those specs to the Radeon HD 3650 256MB, which makes use of a 55 nm design. AMD has clocked the core speed at 725 MHz. The DDR2 RAM is set to run at a frequency of 800 MHz on this model. It features 120(24x5) SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB		78 Watts
GeForce GTX 560		150 Watts
	Difference: 72 Watts (92%)

Memory Bandwidth

The GeForce GTX 560 should theoretically be a lot faster than the Radeon HD 3650 256MB in general. (explain)

GeForce GTX 560		128128 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 102528 (401%)

Texel Rate

The GeForce GTX 560 will be quite a bit (approximately 682%) more effective at AF than the Radeon HD 3650 256MB. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 39560 (682%)

Pixel Rate

The GeForce GTX 560 is much (approximately 794%) faster with regards to FSAA than the Radeon HD 3650 256MB, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 23020 (794%)

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 max amount of data (in units of megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record 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 clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few 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.