GeForce GT 340 1GB vs Radeon R9 390 8G

Intro

Compare those specifications to the Radeon R9 390 8G, which makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory runs at a frequency of 1500 MHz on this specific card. It features 2560 SPUs as well as 160 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon R9 390 8G		275 Watts
	Difference: 206 Watts (299%)

Memory Bandwidth

The Radeon R9 390 8G should theoretically perform quite a bit faster than the GeForce GT 340 1GB overall. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 329600 (606%)

Texel Rate

The Radeon R9 390 8G should be a lot (approximately 809%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 142400 (809%)

Pixel Rate

The Radeon R9 390 8G is quite a bit (about 1355%) more effective at full screen anti-aliasing than the GeForce GT 340 1GB, and able to handle higher screen resolutions better. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 59600 (1355%)

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 maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core 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 rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.