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Geforce GTX 680 vs Radeon R9 270

Intro

The Geforce GTX 680 has a GPU clock speed of 1006 MHz, and the 2048 MB of GDDR5 RAM is set to run at 1502 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon R9 270, which makes use of a 28 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 RAM is set to run at a speed of 1400 MHz on this particular model. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

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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

Geforce GTX 680 7650 points
Radeon R9 270 5943 points
Difference: 1707 (29%)

Ethereum Mining Hash Rate

Geforce GTX 680 16 Mh/s
Radeon R9 270 15 Mh/s
Difference: 1 (7%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
Geforce GTX 680 195 Watts
Difference: 45 Watts (30%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 680 should in theory be just a bit better than the Radeon R9 270 in general. (explain)

Geforce GTX 680 192256 MB/sec
Radeon R9 270 179200 MB/sec
Difference: 13056 (7%)

Texel Rate

The Geforce GTX 680 should be quite a bit (about 79%) faster with regards to AF than the Radeon R9 270. (explain)

Geforce GTX 680 128768 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 56768 (79%)

Pixel Rate

The Geforce GTX 680 should be a bit (more or less 12%) more effective at FSAA than the Radeon R9 270, and able to handle higher resolutions better. (explain)

Geforce GTX 680 32192 Mpixels/sec
Radeon R9 270 28800 Mpixels/sec
Difference: 3392 (12%)

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

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Geforce GTX 680

Amazon.com

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Radeon R9 270

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Geforce GTX 680 Radeon R9 270
Manufacturer nVidia AMD
Year March 2012 November 2013
Code Name GK104 Curacao Pro
Memory 2048 MB 2048 MB
Core Speed 1006 MHz 900 MHz
Memory Speed 6008 MHz 5600 MHz
Power (Max TDP) 195 watts 150 watts
Bandwidth 192256 MB/sec 179200 MB/sec
Texel Rate 128768 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 32192 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 1536 1280
Texture Mapping Units 128 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.2
OpenGL Version OpenGL 4.2 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Geforce GTX 680

Amazon.com

Check prices at:

Radeon R9 270

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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