GeForce GTX 750 Ti vs Radeon HD 5770

Intro

Compare all that to the Radeon HD 5770, which comes with a GPU core clock speed of 850 MHz, and 1024 MB of GDDR5 memory set to run at 1200 MHz through a 128-bit bus. It also is made up of 800(160x5) Stream Processors, 40 Texture Address Units, 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 5770		108 Watts
	Difference: 48 Watts (80%)

Memory Bandwidth

The GeForce GTX 750 Ti, in theory, should be a little bit faster than the Radeon HD 5770 in general. (explain)

GeForce GTX 750 Ti		86400 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 9600 (13%)

Texel Rate

The GeForce GTX 750 Ti should be a bit (approximately 20%) faster with regards to AF than the Radeon HD 5770. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 6800 (20%)

Pixel Rate

The GeForce GTX 750 Ti should be a bit (approximately 20%) better at anti-aliasing than the Radeon HD 5770, and also should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 2720 (20%)

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 across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 number of pixels the video card can 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 ROPs by the clock 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 rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.