GeForce GTX 650 Ti 2GB vs Radeon HD 3850 X2

Intro

Compare all of that 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 runs at a speed of 828 MHz on this model. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 3850 X2 should perform a lot 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 a lot (about 178%) more effective at anisotropic 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 should be quite a bit (approximately 44%) more effective at FSAA than the GeForce GTX 650 Ti 2GB, and should be capable of handling higher screen resolutions better. (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: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the card's 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 higher 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 texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.