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Radeon HD 4650 512MB vs Radeon HD 5450
Intro
The Radeon HD 4650 512MB comes with clock speeds of 600 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 memory. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 Rasterization Operator Units.Compare those specifications to the Radeon HD 5450, which comes with a core clock frequency of 650 MHz and a DDR3 memory speed of 800 MHz. It also features a 64-bit bus, and makes use of a 40 nm design. It is comprised of 80(16x5) SPUs, 8 TAUs, and 4 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5450 |
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19 Watts |
| Radeon HD 4650 512MB |
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55 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 4650 512MB should in theory be much superior to the Radeon HD 5450 overall. (explain)
| Radeon HD 4650 512MB |
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16000 MB/sec |
| Radeon HD 5450 |
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12800 MB/sec |
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Texel Rate
The Radeon HD 4650 512MB is much (more or less 269%) more effective at texture filtering than the Radeon HD 5450. (explain)| Radeon HD 4650 512MB |
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19200 Mtexels/sec |
| Radeon HD 5450 |
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5200 Mtexels/sec |
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Pixel Rate
The Radeon HD 4650 512MB will be much (approximately 85%) better at FSAA than the Radeon HD 5450, and able to handle higher resolutions more effectively. (explain)| Radeon HD 4650 512MB |
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4800 Mpixels/sec |
| Radeon HD 5450 |
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2600 Mpixels/sec |
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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
Radeon HD 4650 512MBAmazon.com
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Radeon HD 5450Amazon.com
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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
| Model | Radeon HD 4650 512MB | Radeon HD 5450 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Sep 10, 2008 | February 4, 2010 |
| Code Name | RV730 PRO | Cedar PRO |
| Memory | 512 MB | 512 MB |
| Core Speed | 600 MHz | 650 MHz |
| Memory Speed | 1000 MHz | 1600 MHz |
| Power (Max TDP) | 55 watts | 19 watts |
| Bandwidth | 16000 MB/sec | 12800 MB/sec |
| Texel Rate | 19200 Mtexels/sec | 5200 Mtexels/sec |
| Pixel Rate | 4800 Mpixels/sec | 2600 Mpixels/sec |
| Unified Shaders | 320(64x5) | 80(16x5) |
| Texture Mapping Units | 32 | 8 |
| Render Output Units | 8 | 4 |
| Bus Type | DDR2 | DDR3 |
| Bus Width | 128-bit | 64-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 514 million | 292 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 3.2 |
Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. 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 many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.
Radeon HD 4650 512MBAmazon.com
Check prices at:
|
Radeon HD 5450Amazon.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
One Response to “Radeon HD 4650 512MB vs Radeon HD 5450”[...] much. So a GFX will be needed, as I thought. Here is another nice comparison, no benches though: Radeon HD 4650 512MB vs Radeon HD 5450 – Performance Comparison Benchmarks @ Hardware Compare Reply With [...]