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Radeon HD 4650 512MB vs Radeon HD 6570 (OEM) 2GB

Intro

The Radeon HD 4650 512MB has core speeds of 600 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 320(64x5) SPUs along with 32 TAUs and 8 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6570 (OEM) 2GB, which has GPU clock speed of 650 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 480 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB 50 Watts
Radeon HD 4650 512MB 55 Watts
Difference: 5 Watts (10%)

Memory Bandwidth

In theory, the Radeon HD 6570 (OEM) 2GB should be 300% quicker than the Radeon HD 4650 512MB overall, due to its greater data rate. (explain)

Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Radeon HD 4650 512MB 16000 MB/sec
Difference: 48000 (300%)

Texel Rate

The Radeon HD 4650 512MB should be a lot (approximately 23%) better at texture filtering than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 4650 512MB 19200 Mtexels/sec
Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Difference: 3600 (23%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6570 (OEM) 2GB is superior to the Radeon HD 4650 512MB, but only just. (explain)

Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Radeon HD 4650 512MB 4800 Mpixels/sec
Difference: 400 (8%)

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 4650 512MB

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 2GB

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 4650 512MB Radeon HD 6570 (OEM) 2GB
Manufacturer AMD AMD
Year Sep 10, 2008 February 2011
Code Name RV730 PRO Turks
Memory 512 MB 1024 MB
Core Speed 600 MHz 650 MHz
Memory Speed 1000 MHz 4000 MHz
Power (Max TDP) 55 watts 50 watts
Bandwidth 16000 MB/sec 64000 MB/sec
Texel Rate 19200 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 4800 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 320(64x5) 480
Texture Mapping Units 32 24
Render Output Units 8 8
Bus Type DDR2 GDDR5
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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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 max fill rate.

Display Prices

Hide Prices

Radeon HD 4650 512MB

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 2GB

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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