GeForce GTX Titan Black vs Radeon HD 3650 512MB

Intro

Compare those specifications to the Radeon HD 3650 512MB, which comes with a clock speed of 725 MHz and a GDDR3 memory speed of 800 MHz. It also makes use of a 128-bit bus, and uses a 55 nm design. It is made up of 120(24x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB		78 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 172 Watts (221%)

Memory Bandwidth

In theory, the GeForce GTX Titan Black should be 1213% quicker than the Radeon HD 3650 512MB overall, due to its higher data rate. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 310400 (1213%)

Texel Rate

The GeForce GTX Titan Black will be a lot (more or less 3579%) better at texture filtering than the Radeon HD 3650 512MB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 207560 (3579%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX Titan Black is superior to the Radeon HD 3650 512MB, and very much so. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon HD 3650 512MB		2900 Mpixels/sec
	Difference: 39772 (1371%)

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 largest amount of data (counted in MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.