GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 7970
1407%
1407%
AMD Radeon HD 6450
8%
8%
AMD Radeon HD 7970 is approximately 1399% faster
Technical Specifications
| Specification | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| Graphics ProcessorDifferent | Tahiti | Caicos |
| CoresDifferent | 2048 | 160 |
| TMUsDifferent | 128 | 8 |
| ROPsDifferent | 32 | 4 |
| Memory SizeDifferent | 3 GB | 512 MB |
| Memory TypeDifferent | GDDR5 | GDDR3 |
| Bus WidthDifferent | 384 bit | 64 bit |
Graphics Processor
| Feature | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| GPU NameDifferent | Tahiti | Caicos |
| GPU VariantDifferent | Tahiti XT(215-0821060) | Caicos PRO |
| ArchitectureDifferent | GCN 1.0 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 28 nm | 40 nm |
| TransistorsDifferent | 4,313 million | 370 million |
| DensityDifferent | 12.3M / mm² | 5.5M / mm² |
| Die SizeDifferent | 352 mm² | 67 mm² |
| Chip PackageDifferent | N/A | FCBGA-631 |
Graphics Card
| Feature | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| Release DateDifferent | Jan 9th, 2012 | Apr 7th, 2011 |
| AnnouncedDifferent | Dec 22nd, 2011 | N/A |
| GenerationDifferent | Southern Islands(HD 7900) | Northern Islands(HD 6400) |
| PredecessorDifferent | Northern Islands | Evergreen |
| SuccessorDifferent | Sea Islands | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 549 USD | 55 USD |
| Bus InterfaceDifferent | PCIe 3.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 191 in our database | 14 in our database |
Clock Speeds
| Feature | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| GPU ClockDifferent | 925 MHz | 625 MHz |
| Memory ClockDifferent | 1375 MHz5.5 Gbps effective | 500 MHz1000 Mbps effective |
Memory
| Feature | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| Memory SizeDifferent | 3 GB | 512 MB |
| Memory TypeDifferent | GDDR5 | GDDR3 |
| Memory BusDifferent | 384 bit | 64 bit |
| BandwidthDifferent | 264.0 GB/s | 8.000 GB/s |
Render Config
| Feature | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| Shading UnitsDifferent | 2048 | 160 |
| TMUsDifferent | 128 | 8 |
| ROPsDifferent | 32 | 4 |
| Compute UnitsDifferent | 32 | 2 |
| L1 CacheDifferent | 16 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 768 KB | 128 KB |
Theoretical Performance
| Feature | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| Pixel RateDifferent | 29.60 GPixel/s | 2.500 GPixel/s |
| Texture RateDifferent | 118.4 GTexel/s | 5.000 GTexel/s |
| FP32 (float)Different | 3.789 TFLOPS | 200.0 GFLOPS |
| FP64 (double)Different | 947.2 GFLOPS (1:4) | N/A |
Board Design
| Feature | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| Slot WidthDifferent | Dual-slot | Single-slot |
| LengthDifferent | 275 mm10.8 inches | 168 mm6.6 inches |
| HeightDifferent | 111 mm4.4 inches | N/A |
| WidthDifferent | 38 mm1.5 inches | N/A |
| TDPDifferent | 250 W | 18 W |
| Suggested PSUDifferent | 600 W | 200 W |
| OutputsDifferent | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 | 1x DVI1x HDMI 1.3a1x VGA |
| Power ConnectorsDifferent | 1x 6-pin + 1x 8-pin | None |
| Board NumberDifferent | 109-C38637-00 | 109-C26037-00A |
Graphics Features
| Feature | AMD Radeon HD 7970 | AMD Radeon HD 6450 |
|---|---|---|
| DirectXDifferent | 12 (11_1) | 11.2 (11_0) |
| OpenGLDifferent | 4.6 | 4.4 |
| OpenCLDifferent | 2.1 (1.2) | 1.2 |
| VulkanDifferent | 1.2.170 | N/A |
| Shader ModelDifferent | 6.5 (5.1) | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
48
Detailed Features
More Comparisons with AMD Radeon HD 7970
Compare AMD Radeon HD 7970 with other GPUs of similar performance
AMD Radeon HD 7970 vs Radeon HD 7970 GHz Edition
Radeon HD 7970 GHz Edition Performance113%
Radeon HD 7970 GHz Edition is 13% faster than AMD Radeon HD 7970
Compare Detailed Specs
AMD Radeon HD 7970 vs GeForce GTX 590
GeForce GTX 590 Performance113%
GeForce GTX 590 is 13% faster than AMD Radeon HD 7970
Compare Detailed Specs
AMD Radeon HD 7970 vs Radeon R9 280X
Radeon R9 280X Performance111%
Radeon R9 280X is 11% faster than AMD Radeon HD 7970
Compare Detailed Specs
AMD Radeon HD 7970 vs Radeon HD 6990
Radeon HD 6990 Performance109%
Radeon HD 6990 is 9% faster than AMD Radeon HD 7970
Compare Detailed Specs
AMD Radeon HD 7970 vs GeForce GTX 1050 Ti
GeForce GTX 1050 Ti Performance103%
GeForce GTX 1050 Ti is 3% faster than AMD Radeon HD 7970
Compare Detailed Specs
AMD Radeon HD 7970 vs GeForce GTX 680
GeForce GTX 680 Performance101%
GeForce GTX 680 is 1% faster than AMD Radeon HD 7970
Compare Detailed Specs
More Comparisons with AMD Radeon HD 6450
Compare AMD Radeon HD 6450 with other GPUs of similar performance
AMD Radeon HD 6450 vs GeForce GT 520
GeForce GT 520 Performance106%
GeForce GT 520 is 6% faster than AMD Radeon HD 6450
Compare Detailed Specs
AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
Compare Detailed Specs
AMD Radeon HD 6450 vs Radeon HD 5450
Radeon HD 5450 Performance85%
Radeon HD 5450 is 15% slower than AMD Radeon HD 6450
Compare Detailed Specs
AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
Compare Detailed Specs
AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
Compare Detailed Specs