GeForce GTX 650 vs Radeon R9 380 2G

Intro

Compare all that to the Radeon R9 380 2G, which uses a 28 nm design. AMD has set the core speed at 970 MHz. The GDDR5 memory runs at a frequency of 1425 MHz on this card. It features 1792 SPUs along with 112 Texture Address Units and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 380 2G		8850 points
GeForce GTX 650		2263 points
	Difference: 6587 (291%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon R9 380 2G		190 Watts
	Difference: 126 Watts (197%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G should perform much faster than the GeForce GTX 650 overall. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 102400 (128%)

Texel Rate

The Radeon R9 380 2G is quite a bit (more or less 221%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 74784 (221%)

Pixel Rate

The Radeon R9 380 2G is a lot (about 83%) faster with regards to anti-aliasing than the GeForce GTX 650, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 14112 (83%)

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 max amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel 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.