GeForce GTX Titan Black vs Radeon HD 3650 256MB

Intro

Compare all of that to the Radeon HD 3650 256MB, which has a core clock speed of 725 MHz and a DDR2 memory speed of 800 MHz. It also features a 128-bit memory bus, and uses a 55 nm design. It is comprised of 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB		78 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 172 Watts (221%)

Memory Bandwidth

In theory, the GeForce GTX Titan Black will be 1213% quicker than the Radeon HD 3650 256MB in general, because of its greater data rate. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 310400 (1213%)

Texel Rate

The GeForce GTX Titan Black is quite a bit (more or less 3579%) better at AF than the Radeon HD 3650 256MB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 207560 (3579%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX Titan Black is a better choice, and very much so. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon HD 3650 256MB		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: Bandwidth is the maximum amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the 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 number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.