GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
ATI Radeon HD 4870
133%
133%
AMD Radeon HD 6850
132%
132%
ATI Radeon HD 4870 is approximately 1% faster
Technical Specifications
| Specification | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| Graphics ProcessorDifferent | RV770 | Barts |
| CoresDifferent | 800 | 960 |
| TMUsDifferent | 40 | 48 |
| ROPsDifferent | 16 | 32 |
| Memory SizeDifferent | 512 MB | 1024 MB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 256 bit | 256 bit |
Graphics Processor
| Feature | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| GPU NameDifferent | RV770 | Barts |
| GPU VariantDifferent | RV770 XT(215-0669049) | Barts PRO(215-0798006) |
| ArchitectureDifferent | TeraScale | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 55 nm | 40 nm |
| TransistorsDifferent | 956 million | 1,700 million |
| DensityDifferent | 3.7M / mm² | 6.7M / mm² |
| Die SizeDifferent | 256 mm² | 255 mm² |
| Chip PackageDifferent | HFCBGA-1492 | HFCBGA-1737 |
Graphics Card
| Feature | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| Release DateDifferent | Jun 25th, 2008 | Oct 21st, 2010 |
| GenerationDifferent | Radeon R700(HD 4800) | Northern Islands(HD 6800) |
| PredecessorDifferent | Radeon R600 | Evergreen |
| SuccessorDifferent | Evergreen | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 299 USD | 179 USD |
| Bus Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 135 in our database | 105 in our database |
Clock Speeds
| Feature | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| GPU ClockDifferent | 750 MHz | 775 MHz |
| Memory ClockDifferent | 900 MHz3.6 Gbps effective | 1000 MHz4 Gbps effective |
Memory
| Feature | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| Memory SizeDifferent | 512 MB | 1024 MB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256 bit | 256 bit |
| BandwidthDifferent | 115.2 GB/s | 128.0 GB/s |
Render Config
| Feature | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| Shading UnitsDifferent | 800 | 960 |
| TMUsDifferent | 40 | 48 |
| ROPsDifferent | 16 | 32 |
| Compute UnitsDifferent | 10 | 12 |
| L1 CacheDifferent | 16 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 256 KB | 512 KB |
Theoretical Performance
| Feature | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| Pixel RateDifferent | 12.00 GPixel/s | 24.80 GPixel/s |
| Texture RateDifferent | 30.00 GTexel/s | 37.20 GTexel/s |
| FP32 (float)Different | 1,200.0 GFLOPS | 1,488.0 GFLOPS |
| FP64 (double)Different | 240.0 GFLOPS (1:5) | N/A |
Board Design
| Feature | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 241 mm9.5 inches | 198 mm7.8 inches |
| HeightDifferent | 111 mm4.4 inches | N/A |
| WidthDifferent | 40 mm1.6 inches | N/A |
| TDPDifferent | 150 W | 127 W |
| Suggested PSUDifferent | 450 W | 300 W |
| OutputsDifferent | 2x DVI1x S-Video | 2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1 |
| Power ConnectorsDifferent | 2x 6-pin | 1x 6-pin |
| Board NumberDifferent | 109-B50731-10 | 109-C22301-00B |
Graphics Features
| Feature | ATI Radeon HD 4870 | AMD Radeon HD 6850 |
|---|---|---|
| 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
More Comparisons with ATI Radeon HD 4870
Compare ATI Radeon HD 4870 with other GPUs of similar performance
ATI Radeon HD 4870 vs GeForce GTX 460
GeForce GTX 460 Performance120%
GeForce GTX 460 is 20% faster than ATI Radeon HD 4870
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ATI Radeon HD 4870 vs Radeon HD 4890
Radeon HD 4890 Performance116%
Radeon HD 4890 is 16% faster than ATI Radeon HD 4870
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ATI Radeon HD 4870 vs Radeon HD 6790
Radeon HD 6790 Performance114%
Radeon HD 6790 is 14% faster than ATI Radeon HD 4870
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ATI Radeon HD 4870 vs Radeon HD 5830
Radeon HD 5830 Performance108%
Radeon HD 5830 is 8% faster than ATI Radeon HD 4870
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ATI Radeon HD 4870 vs GeForce GTX 650
GeForce GTX 650 Performance102%
GeForce GTX 650 is 2% faster than ATI Radeon HD 4870
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ATI Radeon HD 4870 vs GeForce GTX 550 Ti
GeForce GTX 550 Ti Performance101%
GeForce GTX 550 Ti is 1% faster than ATI Radeon HD 4870
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More Comparisons with AMD Radeon HD 6850
Compare AMD Radeon HD 6850 with other GPUs of similar performance
AMD Radeon HD 6850 vs GeForce GTX 470
GeForce GTX 470 Performance116%
GeForce GTX 470 is 16% faster than AMD Radeon HD 6850
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AMD Radeon HD 6850 vs GeForce GTX 650 Ti
GeForce GTX 650 Ti Performance111%
GeForce GTX 650 Ti is 11% faster than AMD Radeon HD 6850
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AMD Radeon HD 6850 vs Radeon HD 5850
Radeon HD 5850 Performance109%
Radeon HD 5850 is 9% faster than AMD Radeon HD 6850
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AMD Radeon HD 6850 vs GeForce GTX 285
GeForce GTX 285 Performance102%
GeForce GTX 285 is 2% faster than AMD Radeon HD 6850
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AMD Radeon HD 6850 vs Radeon HD 6850
Radeon HD 6850 Performance100%
Radeon HD 6850 is 0% slower than AMD Radeon HD 6850
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AMD Radeon HD 6850 vs GeForce GTX 280
GeForce GTX 280 Performance94%
GeForce GTX 280 is 6% slower than AMD Radeon HD 6850
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