GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
ATI Radeon HD 4870 X2
753%
753%
AMD Radeon HD 6450
13%
13%
ATI Radeon HD 4870 X2 is approximately 740% faster
Technical Specifications
| Specification | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| Graphics ProcessorDifferent | R700 x2 | Caicos |
| CoresDifferent | 800 x2 | 160 |
| TMUsDifferent | 40 x2 | 8 |
| ROPsDifferent | 16 x2 | 4 |
| Memory SizeDifferent | 1024 MB x2 | 512 MB |
| Memory TypeDifferent | GDDR5 | GDDR3 |
| Bus WidthDifferent | 256 bit x2 | 64 bit |
Graphics Processor
| Feature | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| GPU NameDifferent | R700 | Caicos |
| GPU VariantDifferent | R700 XT(215-0669045) | Caicos PRO |
| ArchitectureDifferent | TeraScale | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 55 nm | 40 nm |
| TransistorsDifferent | 956 million | 370 million |
| DensityDifferent | 3.7M / mm² | 5.5M / mm² |
| Die SizeDifferent | 256 mm² | 67 mm² |
| Chip PackageDifferent | N/A | FCBGA-631 |
Graphics Card
| Feature | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| Release DateDifferent | Aug 12th, 2008 | Apr 7th, 2011 |
| GenerationDifferent | Radeon R700(HD 4800) | Northern Islands(HD 6400) |
| PredecessorDifferent | Radeon R600 | Evergreen |
| SuccessorDifferent | Evergreen | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 550 USD | 55 USD |
| Bus Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 79 in our database | 14 in our database |
Clock Speeds
| Feature | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| GPU ClockDifferent | 750 MHz | 625 MHz |
| Memory ClockDifferent | 900 MHz3.6 Gbps effective | 500 MHz1000 Mbps effective |
Memory
| Feature | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| Memory SizeDifferent | 1024 MB | 512 MB |
| Memory TypeDifferent | GDDR5 | GDDR3 |
| Memory BusDifferent | 256 bit | 64 bit |
| BandwidthDifferent | 115.2 GB/s | 8.000 GB/s |
Render Config
| Feature | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| Shading UnitsDifferent | 800 | 160 |
| TMUsDifferent | 40 | 8 |
| ROPsDifferent | 16 | 4 |
| Compute UnitsDifferent | 10 | 2 |
| L1 CacheDifferent | 16 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 256 KB | 128 KB |
Theoretical Performance
| Feature | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| Pixel RateDifferent | 12.00 GPixel/s | 2.500 GPixel/s |
| Texture RateDifferent | 30.00 GTexel/s | 5.000 GTexel/s |
| FP32 (float)Different | 1,200.0 GFLOPS | 200.0 GFLOPS |
| FP64 (double)Different | 240.0 GFLOPS (1:5) | N/A |
Board Design
| Feature | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| Slot WidthDifferent | Dual-slot | Single-slot |
| LengthDifferent | 267 mm10.5 inches | 168 mm6.6 inches |
| HeightDifferent | 111 mm4.4 inches | N/A |
| WidthDifferent | 38 mm1.5 inches | N/A |
| TDPDifferent | 286 W | 18 W |
| Suggested PSUDifferent | 600 W | 200 W |
| OutputsDifferent | 2x DVI1x S-Video | 1x DVI1x HDMI 1.3a1x VGA |
| Power ConnectorsDifferent | 1x 6-pin + 1x 8-pin | None |
| Board NumberDifferent | 109-B50937-00 | 109-C26037-00A |
Graphics Features
| Feature | ATI Radeon HD 4870 X2 | AMD Radeon HD 6450 |
|---|---|---|
| DirectXDifferent | 10.1 (10_1) | 11.2 (11_0) |
| OpenGLDifferent | 3.3 | 4.4 |
| OpenCLDifferent | 1.1 | 1.2 |
| Vulkan | N/A | N/A |
| Shader ModelDifferent | 4.1 | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
47
Detailed Features
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Compare ATI Radeon HD 4870 X2 with other GPUs of similar performance
ATI Radeon HD 4870 X2 vs GeForce GTX 570
GeForce GTX 570 Performance120%
GeForce GTX 570 is 20% faster than ATI Radeon HD 4870 X2
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ATI Radeon HD 4870 X2 vs GeForce GTX 660
GeForce GTX 660 Performance119%
GeForce GTX 660 is 19% faster than ATI Radeon HD 4870 X2
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ATI Radeon HD 4870 X2 vs Radeon R7 370
Radeon R7 370 Performance119%
Radeon R7 370 is 19% faster than ATI Radeon HD 4870 X2
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ATI Radeon HD 4870 X2 vs Radeon HD 6970
Radeon HD 6970 Performance115%
Radeon HD 6970 is 15% faster than ATI Radeon HD 4870 X2
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ATI Radeon HD 4870 X2 vs GeForce GTX 480
GeForce GTX 480 Performance110%
GeForce GTX 480 is 10% faster than ATI Radeon HD 4870 X2
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ATI Radeon HD 4870 X2 vs Radeon HD 7850
Radeon HD 7850 Performance108%
Radeon HD 7850 is 8% faster than ATI Radeon HD 4870 X2
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More Comparisons with AMD Radeon HD 6450
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AMD Radeon HD 6450 vs GeForce GT 520
GeForce GT 520 Performance106%
GeForce GT 520 is 6% faster than AMD Radeon HD 6450
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AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
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AMD Radeon HD 6450 vs Radeon HD 5450
Radeon HD 5450 Performance85%
Radeon HD 5450 is 15% slower than AMD Radeon HD 6450
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AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
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AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
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