GeForce 9800 GX2 vs Radeon R9 Nano

Intro

Compare all that to the Radeon R9 Nano, which has a GPU core clock speed of 1000 MHz, and 4096 MB of HBM RAM running at 500 MHz through a 4096-bit bus. It also features 4096 Stream Processors, 256 TAUs, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano		175 Watts
GeForce 9800 GX2		197 Watts
	Difference: 22 Watts (13%)

Memory Bandwidth

Theoretically, the Radeon R9 Nano should be a lot faster than the GeForce 9800 GX2 overall. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce 9800 GX2		128000 MB/sec
	Difference: 384000 (300%)

Texel Rate

The Radeon R9 Nano will be much (more or less 233%) better at AF than the GeForce 9800 GX2. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce 9800 GX2		76800 Mtexels/sec
	Difference: 179200 (233%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 Nano is superior to the GeForce 9800 GX2, by far. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce 9800 GX2		19200 Mpixels/sec
	Difference: 44800 (233%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 processed in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.