I get commissions for purchases made through links on this page. (more info)

Compare any two graphics cards:
VS

Geforce GTX 670 vs Radeon HD 4870 X2

Intro

The Geforce GTX 670 uses a 28 nm design. nVidia has clocked the core speed at 915 MHz. The GDDR5 RAM works at a speed of 1500 MHz on this model. It features 1344 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Compare all of that to the Radeon HD 4870 X2, which has a core clock frequency of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670 170 Watts
Radeon HD 4870 X2 350 Watts
Difference: 180 Watts (106%)

Memory Bandwidth

In theory, the Radeon HD 4870 X2 should perform a little bit faster than the Geforce GTX 670 in general. (explain)

Radeon HD 4870 X2 230400 MB/sec
Geforce GTX 670 192000 MB/sec
Difference: 38400 (20%)

Texel Rate

The Geforce GTX 670 is a lot (more or less 71%) faster with regards to texture filtering than the Radeon HD 4870 X2. (explain)

Geforce GTX 670 102480 Mtexels/sec
Radeon HD 4870 X2 60000 Mtexels/sec
Difference: 42480 (71%)

Pixel Rate

The Geforce GTX 670 should be quite a bit (more or less 22%) faster with regards to FSAA than the Radeon HD 4870 X2, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 670 29280 Mpixels/sec
Radeon HD 4870 X2 24000 Mpixels/sec
Difference: 5280 (22%)

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

Display Prices

Hide Prices

Geforce GTX 670

Amazon.com

Check prices at:

Radeon HD 4870 X2

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.

Specifications

Display Specifications

Hide Specifications

Model Geforce GTX 670 Radeon HD 4870 X2
Manufacturer nVidia AMD
Year May 2012 Aug 12, 2008
Code Name GK104 R700
Memory 2048 MB 1024 MB (x2)
Core Speed 915 MHz 750 MHz (x2)
Memory Speed 6000 MHz 3600 MHz (x2)
Power (Max TDP) 170 watts 350 watts
Bandwidth 192000 MB/sec 230400 MB/sec
Texel Rate 102480 Mtexels/sec 60000 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 24000 Mpixels/sec
Unified Shaders 1344 800(160x5) (x2)
Texture Mapping Units 112 40 (x2)
Render Output Units 32 16 (x2)
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit (x2)
Fab Process 28 nm 55 nm
Transistors 3540 million 956 million
Bus PCIe 3.0 x16 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.2 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Geforce GTX 670

Amazon.com

Check prices at:

Radeon HD 4870 X2

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.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield