GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 6990
1354%
1354%
AMD Radeon HD 6450
7%
7%
AMD Radeon HD 6990 is approximately 1347% faster
Technical Specifications
| Specification | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| Graphics ProcessorDifferent | Antilles x2 | Caicos |
| CoresDifferent | 1536 x2 | 160 |
| TMUsDifferent | 96 x2 | 8 |
| ROPsDifferent | 32 x2 | 4 |
| Memory SizeDifferent | 2 GB x2 | 512 MB |
| Memory TypeDifferent | GDDR5 | GDDR3 |
| Bus WidthDifferent | 256 bit x2 | 64 bit |
Graphics Processor
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| GPU NameDifferent | Antilles | Caicos |
| GPU VariantDifferent | Antilles XT(215-0807027) | Caicos PRO |
| ArchitectureDifferent | TeraScale 3 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 40 nm |
| TransistorsDifferent | 2,640 million | 370 million |
| DensityDifferent | 6.8M / mm² | 5.5M / mm² |
| Die SizeDifferent | 389 mm² | 67 mm² |
| Chip PackageDifferent | N/A | FCBGA-631 |
Graphics Card
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| Release DateDifferent | Mar 8th, 2011 | Apr 7th, 2011 |
| GenerationDifferent | Northern Islands(HD 6900) | Northern Islands(HD 6400) |
| Predecessor | Evergreen | Evergreen |
| Successor | Southern Islands | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 699 USD | 55 USD |
| Bus Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 47 in our database | 14 in our database |
Clock Speeds
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| GPU ClockDifferent | 830 MHz | 625 MHz |
| Memory ClockDifferent | 1250 MHz5 Gbps effective | 500 MHz1000 Mbps effective |
Memory
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| Memory SizeDifferent | 2 GB | 512 MB |
| Memory TypeDifferent | GDDR5 | GDDR3 |
| Memory BusDifferent | 256 bit | 64 bit |
| BandwidthDifferent | 160.0 GB/s | 8.000 GB/s |
Render Config
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| Shading UnitsDifferent | 1536 | 160 |
| TMUsDifferent | 96 | 8 |
| ROPsDifferent | 32 | 4 |
| Compute UnitsDifferent | 24 | 2 |
| L1 Cache | 8 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 512 KB | 128 KB |
Theoretical Performance
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| Pixel RateDifferent | 26.56 GPixel/s | 2.500 GPixel/s |
| Texture RateDifferent | 79.68 GTexel/s | 5.000 GTexel/s |
| FP32 (float)Different | 2.550 TFLOPS | 200.0 GFLOPS |
| FP64 (double)Different | 637.4 GFLOPS (1:4) | N/A |
Board Design
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| Slot WidthDifferent | Dual-slot | Single-slot |
| LengthDifferent | 310 mm12.2 inches | 168 mm6.6 inches |
| HeightDifferent | 115 mm4.5 inches | N/A |
| WidthDifferent | 40 mm1.6 inches | N/A |
| TDPDifferent | 375 W | 18 W |
| Suggested PSUDifferent | 750 W | 200 W |
| OutputsDifferent | 1x DVI4x mini-DisplayPort 1.2 | 1x DVI1x HDMI 1.3a1x VGA |
| Power ConnectorsDifferent | 2x 8-pin | None |
| Board NumberDifferent | 109-C20647-00 | 109-C26037-00A |
Graphics Features
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6450 |
|---|---|---|
| DirectX | 11.2 (11_0) | 11.2 (11_0) |
| OpenGL | 4.4 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | N/A | N/A |
| Shader Model | 5.0 | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
47
Detailed Features
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
Compare Detailed Specs
AMD Radeon HD 6990 vs Radeon RX 6400
Radeon RX 6400 Performance117%
Radeon RX 6400 is 17% faster than AMD Radeon HD 6990
Compare Detailed Specs
AMD Radeon HD 6990 vs Arc A380
Arc A380 Performance115%
Arc A380 is 15% faster than AMD Radeon HD 6990
Compare Detailed Specs
AMD Radeon HD 6990 vs GeForce GTX 780
GeForce GTX 780 Performance115%
GeForce GTX 780 is 15% faster than AMD Radeon HD 6990
Compare Detailed Specs
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
Compare Detailed Specs
AMD Radeon HD 6990 vs GeForce GTX 590
GeForce GTX 590 Performance104%
GeForce GTX 590 is 4% faster than AMD Radeon HD 6990
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