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Radeon HD 4670 512MB vs Radeon HD 6570 (OEM) 1GB

Intro

The Radeon HD 4670 512MB features a GPU core speed of 750 MHz, and the 512 MB of GDDR4/GDDR3/DDR3/DDR2 RAM is set to run at 1000 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

Compare all that to the Radeon HD 6570 (OEM) 1GB, which has core clock speeds of 650 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 RAM. It features 480 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB 50 Watts
Radeon HD 4670 512MB 70 Watts
Difference: 20 Watts (40%)

Memory Bandwidth

In theory, the Radeon HD 4670 512MB should be 11% quicker than the Radeon HD 6570 (OEM) 1GB in general, due to its higher data rate. (explain)

Radeon HD 4670 512MB 32000 MB/sec
Radeon HD 6570 (OEM) 1GB 28800 MB/sec
Difference: 3200 (11%)

Texel Rate

The Radeon HD 4670 512MB will be quite a bit (approximately 54%) more effective at texture filtering than the Radeon HD 6570 (OEM) 1GB. (explain)

Radeon HD 4670 512MB 24000 Mtexels/sec
Radeon HD 6570 (OEM) 1GB 15600 Mtexels/sec
Difference: 8400 (54%)

Pixel Rate

The Radeon HD 4670 512MB will be a little bit (approximately 15%) better at FSAA than the Radeon HD 6570 (OEM) 1GB, and also capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 4670 512MB 6000 Mpixels/sec
Radeon HD 6570 (OEM) 1GB 5200 Mpixels/sec
Difference: 800 (15%)

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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Radeon HD 4670 512MB

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 1GB

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

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Model Radeon HD 4670 512MB Radeon HD 6570 (OEM) 1GB
Manufacturer AMD AMD
Year Sep 10, 2008 February 2011
Code Name RV730 XT Turks
Memory 512 MB 1024 MB
Core Speed 750 MHz 650 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) 70 watts 50 watts
Bandwidth 32000 MB/sec 28800 MB/sec
Texel Rate 24000 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 6000 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 320(64x5) 480
Texture Mapping Units 32 24
Render Output Units 8 8
Bus Type GDDR4/GDDR3/DDR3/DDR2 GDDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 514 million 715 million
Bus PCIe 2.0 x16, AGP 8x PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock 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 output 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 potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4670 512MB

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 1GB

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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