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Geforce GTX 770 vs Radeon HD 7870


Intro

The Geforce GTX 770 uses a 28 nm design. nVidia has set the core speed at 1046 MHz. The GDDR5 RAM is set to run at a frequency of 1753 MHz on this particular card. It features 1536 SPUs as well as 128 Texture Address Units and 32 ROPs.

Compare all that to the Radeon HD 7870, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM runs at a speed of 1200 MHz on this specific model. It features 1280 SPUs along with 80 Texture Address Units 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 770 7837 points
Radeon HD 7870 6230 points
Difference: 1607 (26%)

Ethereum Mining Hash Rate

Radeon HD 7870 16 Mh/s
Geforce GTX 770 14 Mh/s
Difference: 2 (14%)

Zcash Mining Hash Rate

Radeon HD 7870 172 Sol/s
Geforce GTX 770 70 Sol/s
Difference: 102 (146%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 175 Watts
Geforce GTX 770 230 Watts
Difference: 55 Watts (31%)

Memory Bandwidth

The Geforce GTX 770 should theoretically perform much faster than the Radeon HD 7870 in general. (explain)

Geforce GTX 770 224384 MB/sec
Radeon HD 7870 153600 MB/sec
Difference: 70784 (46%)

Texel Rate

The Geforce GTX 770 will be a lot (more or less 67%) more effective at texture filtering than the Radeon HD 7870. (explain)

Geforce GTX 770 133888 Mtexels/sec
Radeon HD 7870 80000 Mtexels/sec
Difference: 53888 (67%)

Pixel Rate

The Geforce GTX 770 is just a bit (more or less 5%) better at FSAA than the Radeon HD 7870, and also capable of handling higher resolutions while still performing well. (explain)

Geforce GTX 770 33472 Mpixels/sec
Radeon HD 7870 32000 Mpixels/sec
Difference: 1472 (5%)

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 770

Amazon.com

Radeon HD 7870

Amazon.com

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 770 Radeon HD 7870
Manufacturer nVidia AMD
Year May 2013 March 2012
Code Name GK104 Pitcairn XT
Memory 2048 MB 2048 MB
Core Speed 1046 MHz 1000 MHz
Memory Speed 7012 MHz 4800 MHz
Power (Max TDP) 230 watts 175 watts
Bandwidth 224384 MB/sec 153600 MB/sec
Texel Rate 133888 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 33472 Mpixels/sec 32000 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 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 can be processed in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Geforce GTX 770

Amazon.com

Radeon HD 7870

Amazon.com

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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