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Radeon HD 5770 vs Radeon HD 6670 (OEM) 1GB

Intro

The Radeon HD 5770 comes with a core clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Compare that to the Radeon HD 6670 (OEM) 1GB, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also is comprised of 480 SPUs, 24 Texture Address Units, and 8 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB 63 Watts
Radeon HD 5770 108 Watts
Difference: 45 Watts (71%)

Memory Bandwidth

In theory, the Radeon HD 5770 will be 20% faster than the Radeon HD 6670 (OEM) 1GB in general, because of its greater data rate. (explain)

Radeon HD 5770 76800 MB/sec
Radeon HD 6670 (OEM) 1GB 64000 MB/sec
Difference: 12800 (20%)

Texel Rate

The Radeon HD 5770 is a lot (more or less 77%) better at anisotropic filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon HD 5770 34000 Mtexels/sec
Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
Difference: 14800 (77%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 5770 is superior to the Radeon HD 6670 (OEM) 1GB, by far. (explain)

Radeon HD 5770 13600 Mpixels/sec
Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
Difference: 7200 (113%)

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

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

Radeon HD 5770

Amazon.com

Other US-based stores

Radeon HD 6670 (OEM) 1GB

Amazon.com

Other US-based stores

Specifications

Model Radeon HD 5770 Radeon HD 6670 (OEM) 1GB
Manufacturer ATi ATi
Year October 13, 2009 February 2011
Code Name Juniper XT Turks
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe 2.1 x16
Memory 1024 MB 1024 MB
Core Speed 850 MHz 800 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1200 MHz (4800 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 800(160x5) 480
Texture Mapping Units 40 24
Render Output Units 16 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1
Power (Max TDP) 108 watts 63 watts
Shader Model 5.0 5.0
Bandwidth 76800 MB/sec 64000 MB/sec
Texel Rate 34000 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 13600 Mpixels/sec 6400 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video 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 amount of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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 - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Comments

2 Responses to “Radeon HD 5770 vs Radeon HD 6670 (OEM) 1GB”
[...] Would be looking for 5770 only @katikoli: Thanks for the suggestion, but have a look at this: Radeon HD 5770 vs Radeon HD 6670 (OEM) 1GB – Performance Comparison Benchmarks @ Hardware Comp... Again, I think I will have to pass HD4850. Now I am looking for HD5770 only. I am open for [...]
[...] . some games requires more core of processors. that might be some factors that slows me down. . Radeon HD 5770 vs Radeon HD 6670 (OEM) 1GB – Performance Comparison Benchmarks @ Hardware Comp... and 6770 is almost a match for 5770. . just the series defference. . . Radeon HD 5770 vs [...]

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