GeForce GTX 650 Ti 2GB vs Radeon HD 3850 X2

Intro

Compare those specs to the Radeon HD 3850 X2, which makes use of a 55 nm design. AMD has clocked the core frequency at 668 MHz. The GDDR3 memory works at a speed of 828 MHz on this specific model. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 3850 X2 should be much faster than the GeForce GTX 650 Ti 2GB in general. (explain)

Radeon HD 3850 X2		105984 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 19584 (23%)

Texel Rate

The GeForce GTX 650 Ti 2GB will be quite a bit (approximately 178%) better at texture filtering than the Radeon HD 3850 X2. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 3850 X2		21376 Mtexels/sec
	Difference: 38016 (178%)

Pixel Rate

The Radeon HD 3850 X2 will be much (approximately 44%) more effective at full screen anti-aliasing than the GeForce GTX 650 Ti 2GB, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 3850 X2		21376 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 6528 (44%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred over 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 type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of 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 speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. 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 rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.