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Geforce GTX 780 vs Radeon R9 390X 8G

Intro

The Geforce GTX 780 makes use of a 28 nm design. nVidia has clocked the core frequency at 863 MHz. The GDDR5 memory works at a frequency of 1502 MHz on this particular card. It features 2304 SPUs along with 192 TAUs and 48 Rasterization Operator Units.

Compare those specs to the Radeon R9 390X 8G, which uses a 28 nm design. AMD has clocked the core speed at 1050 MHz. The GDDR5 RAM works at a frequency of 1500 MHz on this model. It features 2816 SPUs as well as 176 Texture Address Units and 64 ROPs.

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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

Radeon R9 390X 8G 13555 points
Geforce GTX 780 10082 points
Difference: 3473 (34%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G 32 Mh/s
Geforce GTX 780 20 Mh/s
Difference: 12 (60%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 780 250 Watts
Radeon R9 390X 8G 275 Watts
Difference: 25 Watts (10%)

Memory Bandwidth

As far as performance goes, the Radeon R9 390X 8G should in theory be quite a bit better than the Geforce GTX 780 in general. (explain)

Radeon R9 390X 8G 384000 MB/sec
Geforce GTX 780 288384 MB/sec
Difference: 95616 (33%)

Texel Rate

The Radeon R9 390X 8G will be a small bit (approximately 12%) better at AF than the Geforce GTX 780. (explain)

Radeon R9 390X 8G 184800 Mtexels/sec
Geforce GTX 780 165696 Mtexels/sec
Difference: 19104 (12%)

Pixel Rate

The Radeon R9 390X 8G should be a lot (about 62%) better at full screen anti-aliasing than the Geforce GTX 780, and also able to handle higher resolutions better. (explain)

Radeon R9 390X 8G 67200 Mpixels/sec
Geforce GTX 780 41424 Mpixels/sec
Difference: 25776 (62%)

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 780

Amazon.com

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Radeon R9 390X 8G

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 780 Radeon R9 390X 8G
Manufacturer nVidia AMD
Year May 2013 June 2015
Code Name GK110 Grenada XT
Memory 3072 MB 8192 MB
Core Speed 863 MHz 1050 MHz
Memory Speed 6008 MHz 6000 MHz
Power (Max TDP) 250 watts 275 watts
Bandwidth 288384 MB/sec 384000 MB/sec
Texel Rate 165696 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 41424 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 2304 2816
Texture Mapping Units 192 176
Render Output Units 48 64
Bus Type GDDR5 GDDR5
Bus Width 384-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 7080 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 11.0 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total 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 in a second.

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

Display Prices

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Geforce GTX 780

Amazon.com

Check prices at:

Radeon R9 390X 8G

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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