GeForce GTX 660 vs Radeon R9 Nano

Intro

Compare all that to the Radeon R9 Nano, which features GPU clock speed of 1000 MHz, and 4096 MB of HBM memory running at 500 MHz through a 4096-bit bus. It also is comprised of 4096 Stream Processors, 256 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

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 Nano		14918 points
GeForce GTX 660		5063 points
	Difference: 9855 (195%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
Radeon R9 Nano		175 Watts
	Difference: 35 Watts (25%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 Nano should be much faster than the GeForce GTX 660 overall. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 367808 (255%)

Texel Rate

The Radeon R9 Nano is much (more or less 227%) faster with regards to AF than the GeForce GTX 660. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 177600 (227%)

Pixel Rate

The Radeon R9 Nano will be much (more or less 172%) better at anti-aliasing than the GeForce GTX 660, and also should be able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 40480 (172%)

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 (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.