GeForce 8800 GS vs Radeon R9 380 4G

Intro

Compare those specifications to the Radeon R9 380 4G, which comes with a clock frequency of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GS		105 Watts
Radeon R9 380 4G		190 Watts
	Difference: 85 Watts (81%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 4G should be much faster than the GeForce 8800 GS overall. (explain)

Radeon R9 380 4G		182400 MB/sec
GeForce 8800 GS		38400 MB/sec
	Difference: 144000 (375%)

Texel Rate

The Radeon R9 380 4G is quite a bit (more or less 312%) more effective at AF than the GeForce 8800 GS. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
GeForce 8800 GS		26400 Mtexels/sec
	Difference: 82240 (312%)

Pixel Rate

The Radeon R9 380 4G should be quite a bit (more or less 370%) faster with regards to AA than the GeForce 8800 GS, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
GeForce 8800 GS		6600 Mpixels/sec
	Difference: 24440 (370%)

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 (measured in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.