GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
ATI Radeon HD 4770
23%
23%
AMD Radeon HD 6990
432%
432%
AMD Radeon HD 6990 is approximately 409% faster
Technical Specifications
| Specification | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| Graphics ProcessorDifferent | RV740 | Antilles x2 |
| CoresDifferent | 640 | 1536 x2 |
| TMUsDifferent | 32 | 96 x2 |
| ROPsDifferent | 16 | 32 x2 |
| Memory SizeDifferent | 512 MB | 2 GB x2 |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 128 bit | 256 bit x2 |
Graphics Processor
| Feature | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| GPU NameDifferent | RV740 | Antilles |
| GPU VariantDifferent | RV740 XT(215-0727019) | Antilles XT(215-0807027) |
| ArchitectureDifferent | TeraScale | TeraScale 3 |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 40 nm |
| TransistorsDifferent | 826 million | 2,640 million |
| DensityDifferent | 6.0M / mm² | 6.8M / mm² |
| Die SizeDifferent | 137 mm² | 389 mm² |
Graphics Card
| Feature | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| Release DateDifferent | Apr 28th, 2009 | Mar 8th, 2011 |
| GenerationDifferent | Radeon R700(HD 4700) | Northern Islands(HD 6900) |
| PredecessorDifferent | Radeon R600 | Evergreen |
| SuccessorDifferent | Evergreen | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 109 USD | 699 USD |
| Bus Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 82 in our database | 47 in our database |
Clock Speeds
| Feature | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| GPU ClockDifferent | 750 MHz | 830 MHz |
| Memory ClockDifferent | 800 MHz3.2 Gbps effective | 1250 MHz5 Gbps effective |
Memory
| Feature | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| Memory SizeDifferent | 512 MB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory BusDifferent | 128 bit | 256 bit |
| BandwidthDifferent | 51.20 GB/s | 160.0 GB/s |
Render Config
| Feature | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| Shading UnitsDifferent | 640 | 1536 |
| TMUsDifferent | 32 | 96 |
| ROPsDifferent | 16 | 32 |
| Compute UnitsDifferent | 8 | 24 |
| L1 CacheDifferent | 16 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 128 KB | 512 KB |
Theoretical Performance
| Feature | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| Pixel RateDifferent | 12.00 GPixel/s | 26.56 GPixel/s |
| Texture RateDifferent | 24.00 GTexel/s | 79.68 GTexel/s |
| FP32 (float)Different | 960.0 GFLOPS | 2.550 TFLOPS |
| FP64 (double)Different | 192.0 GFLOPS (1:5) | 637.4 GFLOPS (1:4) |
Board Design
| Feature | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 203 mm8 inches | 310 mm12.2 inches |
| TDPDifferent | 80 W | 375 W |
| Suggested PSUDifferent | 250 W | 750 W |
| OutputsDifferent | 2x DVI1x S-Video | 1x DVI4x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | 1x 6-pin | 2x 8-pin |
| Board NumberDifferent | B743 | 109-C20647-00 |
| HeightDifferent | N/A | 115 mm4.5 inches |
| WidthDifferent | N/A | 40 mm1.6 inches |
Graphics Features
| Feature | ATI Radeon HD 4770 | AMD Radeon HD 6990 |
|---|---|---|
| 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
46
Detailed Features
More Comparisons with ATI Radeon HD 4770
Compare ATI Radeon HD 4770 with other GPUs of similar performance
ATI Radeon HD 4770 vs Radeon HD 5750
Radeon HD 5750 Performance115%
Radeon HD 5750 is 15% faster than ATI Radeon HD 4770
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ATI Radeon HD 4770 vs GeForce GTS 450
GeForce GTS 450 Performance111%
GeForce GTS 450 is 11% faster than ATI Radeon HD 4770
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ATI Radeon HD 4770 vs GeForce GTS 250
GeForce GTS 250 Performance108%
GeForce GTS 250 is 8% faster than ATI Radeon HD 4770
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ATI Radeon HD 4770 vs Radeon HD 4850
Radeon HD 4850 Performance105%
Radeon HD 4850 is 5% faster than ATI Radeon HD 4770
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ATI Radeon HD 4770 vs Radeon HD 4770
Radeon HD 4770 Performance100%
Radeon HD 4770 is 0% slower than ATI Radeon HD 4770
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ATI Radeon HD 4770 vs Radeon HD 4830
Radeon HD 4830 Performance94%
Radeon HD 4830 is 6% slower than ATI Radeon HD 4770
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More Comparisons with AMD Radeon HD 6990
Compare AMD Radeon HD 6990 with other GPUs of similar performance
AMD Radeon HD 6990 vs GeForce GTX 1650
GeForce GTX 1650 Performance119%
GeForce GTX 1650 is 19% faster than AMD Radeon HD 6990
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AMD Radeon HD 6990 vs Radeon RX 6400
Radeon RX 6400 Performance117%
Radeon RX 6400 is 17% faster than AMD Radeon HD 6990
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AMD Radeon HD 6990 vs Arc A380
Arc A380 Performance115%
Arc A380 is 15% faster than AMD Radeon HD 6990
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AMD Radeon HD 6990 vs GeForce GTX 780
GeForce GTX 780 Performance115%
GeForce GTX 780 is 15% faster than AMD Radeon HD 6990
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AMD Radeon HD 6990 vs Radeon HD 7970 GHz Edition
Radeon HD 7970 GHz Edition Performance104%
Radeon HD 7970 GHz Edition is 4% faster than AMD Radeon HD 6990
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AMD Radeon HD 6990 vs GeForce GTX 590
GeForce GTX 590 Performance104%
GeForce GTX 590 is 4% faster than AMD Radeon HD 6990
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