Radeon R9 M275X vs Radeon R9 Nano

Intro

Compare those specs to the Radeon R9 Nano, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The HBM RAM runs at a frequency of 500 MHz on this card. It features 4096 SPUs as well as 256 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
Radeon R9 Nano		175 Watts
	Difference: 125 Watts (250%)

Memory Bandwidth

The Radeon R9 Nano, in theory, should perform quite a bit faster than the Radeon R9 M275X in general. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 440000 (611%)

Texel Rate

The Radeon R9 Nano will be a lot (approximately 611%) faster with regards to AF than the Radeon R9 M275X. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 220000 (611%)

Pixel Rate

The Radeon R9 Nano should be much (about 344%) better at anti-aliasing than the Radeon R9 M275X, and should be able to handle higher resolutions while still performing well. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon R9 M275X		14400 Mpixels/sec
	Difference: 49600 (344%)

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 information (in units of megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.