GeForce GTX 780 Ti vs Radeon HD 5770

Intro

Compare all that to the Radeon HD 5770, which features a GPU core clock speed of 850 MHz, and 1024 MB of GDDR5 RAM set to run at 1200 MHz through a 128-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 142 Watts (131%)

Memory Bandwidth

Performance-wise, the GeForce GTX 780 Ti should in theory be a lot better than the Radeon HD 5770 overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 259200 (338%)

Texel Rate

The GeForce GTX 780 Ti will be a lot (more or less 518%) faster with regards to texture filtering than the Radeon HD 5770. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 176000 (518%)

Pixel Rate

The GeForce GTX 780 Ti is a lot (more or less 209%) more effective at FSAA than the Radeon HD 5770, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 28400 (209%)

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 information (counted in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 are applied in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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