GeForce 9800 GT 512MB vs Radeon R9 M380

Intro

Compare those specifications to the Radeon R9 M380, which comes with a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M380 will be 67% quicker than the GeForce 9800 GT 512MB overall, because of its higher data rate. (explain)

Radeon R9 M380		96000 MB/sec
GeForce 9800 GT 512MB		57600 MB/sec
	Difference: 38400 (67%)

Texel Rate

The Radeon R9 M380 is a small bit (about 19%) faster with regards to anisotropic filtering than the GeForce 9800 GT 512MB. (explain)

Radeon R9 M380		40000 Mtexels/sec
GeForce 9800 GT 512MB		33600 Mtexels/sec
	Difference: 6400 (19%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M380 is a better choice, and very much so. (explain)

Radeon R9 M380		16000 Mpixels/sec
GeForce 9800 GT 512MB		9600 Mpixels/sec
	Difference: 6400 (67%)

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 largest amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.