GeForce GTX 750 Ti vs Radeon HD 3850 256MB

Intro

Compare those specifications to the Radeon HD 3850 256MB, which has a clock speed of 668 MHz and a GDDR3 memory frequency of 828 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
Radeon HD 3850 256MB		75 Watts
	Difference: 15 Watts (25%)

Memory Bandwidth

The GeForce GTX 750 Ti, in theory, should be quite a bit faster than the Radeon HD 3850 256MB overall. (explain)

GeForce GTX 750 Ti		86400 MB/sec
Radeon HD 3850 256MB		52992 MB/sec
	Difference: 33408 (63%)

Texel Rate

The GeForce GTX 750 Ti will be a lot (approximately 282%) more effective at texture filtering than the Radeon HD 3850 256MB. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
Radeon HD 3850 256MB		10688 Mtexels/sec
	Difference: 30112 (282%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 750 Ti is superior to the Radeon HD 3850 256MB, by a large margin. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
Radeon HD 3850 256MB		10688 Mpixels/sec
	Difference: 5632 (53%)

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 maximum amount of data (in units of MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If 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 can be processed in one second. This is worked out by multiplying the total number of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.