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Radeon HD 4650 1GB vs Radeon R9 M395X

Intro

The Radeon HD 4650 1GB comes with core clock speeds of 600 MHz on the GPU, and 700 MHz on the 1024 MB of GDDR3 memory. It features 320(64x5) SPUs as well as 32 TAUs and 8 ROPs.

Compare those specs to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 memory works at a frequency of 1250 MHz on this particular model. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB 55 Watts
Radeon R9 M395X 125 Watts
Difference: 70 Watts (127%)

Memory Bandwidth

Performance-wise, the Radeon R9 M395X should theoretically be much superior to the Radeon HD 4650 1GB overall. (explain)

Radeon R9 M395X 160000 MB/sec
Radeon HD 4650 1GB 22400 MB/sec
Difference: 137600 (614%)

Texel Rate

The Radeon R9 M395X is quite a bit (more or less 382%) more effective at texture filtering than the Radeon HD 4650 1GB. (explain)

Radeon R9 M395X 92544 Mtexels/sec
Radeon HD 4650 1GB 19200 Mtexels/sec
Difference: 73344 (382%)

Pixel Rate

The Radeon R9 M395X should be quite a bit (about 382%) more effective at AA than the Radeon HD 4650 1GB, and also capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 M395X 23136 Mpixels/sec
Radeon HD 4650 1GB 4800 Mpixels/sec
Difference: 18336 (382%)

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 1GB

Amazon.com

Check prices at:

Radeon R9 M395X

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 1GB Radeon R9 M395X
Manufacturer AMD AMD
Year Sep 10, 2008 2015
Code Name RV730 PRO Tonga
Memory 1024 MB 4096 MB
Core Speed 600 MHz 723 MHz
Memory Speed 1400 MHz 5000 MHz
Power (Max TDP) 55 watts 125 watts
Bandwidth 22400 MB/sec 160000 MB/sec
Texel Rate 19200 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 4800 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 320(64x5) 2048
Texture Mapping Units 32 128
Render Output Units 8 32
Bus Type GDDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 55 nm 28 nm
Transistors 514 million (Unknown) million
Bus PCIe 2.0 x16, AGP 8x PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4650 1GB

Amazon.com

Check prices at:

Radeon R9 M395X

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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