GeForce 8800 GT 1GB vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which features core clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce 8800 GT 1GB		105 Watts
	Difference: 40 Watts (62%)

Memory Bandwidth

The Radeon R7 250 should theoretically be much faster than the GeForce 8800 GT 1GB overall. (explain)

Radeon R7 250		73600 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 16000 (28%)

Texel Rate

The GeForce 8800 GT 1GB will be quite a bit (approximately 40%) faster with regards to AF than the Radeon R7 250. (explain)

GeForce 8800 GT 1GB		33600 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 9600 (40%)

Pixel Rate

The GeForce 8800 GT 1GB will be just a bit (about 20%) more effective at anti-aliasing than the Radeon R7 250, and also able to handle higher resolutions without losing too much performance. (explain)

GeForce 8800 GT 1GB		9600 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 1600 (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: Bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.