GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon RX 6900 XT
7616%
7616%
AMD Radeon HD 6450
1%
1%
AMD Radeon RX 6900 XT is approximately 7615% faster
Technical Specifications
| Specification | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| Graphics ProcessorDifferent | Navi 21 | Caicos |
| CoresDifferent | 5120 | 160 |
| TMUsDifferent | 320 | 8 |
| ROPsDifferent | 128 | 4 |
| Memory SizeDifferent | 16 GB | 512 MB |
| Memory TypeDifferent | GDDR6 | GDDR3 |
| Bus WidthDifferent | 256 bit | 64 bit |
Graphics Processor
| Feature | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| GPU NameDifferent | Navi 21 | Caicos |
| GPU VariantDifferent | Navi 21 XTX(215-121000167) | Caicos PRO |
| ArchitectureDifferent | RDNA 2.0 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 7 nm | 40 nm |
| TransistorsDifferent | 26,800 million | 370 million |
| DensityDifferent | 51.5M / mm² | 5.5M / mm² |
| Die SizeDifferent | 520 mm² | 67 mm² |
| Chip PackageDifferent | BGA-2425 | FCBGA-631 |
Graphics Card
| Feature | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| Release DateDifferent | Oct 28th, 2020 | Apr 7th, 2011 |
| AvailabilityDifferent | Dec 8th, 2020 | N/A |
| GenerationDifferent | Navi II(RX 6000) | Northern Islands(HD 6400) |
| PredecessorDifferent | Navi | Evergreen |
| SuccessorDifferent | Navi III | Southern Islands |
| ProductionDifferent | Active | End-of-life |
| Launch PriceDifferent | 999 USD | 55 USD |
| Current PriceDifferent | Amazon/Newegg | N/A |
| Bus InterfaceDifferent | PCIe 4.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 33 in our database | 14 in our database |
Clock Speeds
| Feature | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| Base ClockDifferent | 1825 MHz | N/A |
| Game ClockDifferent | 2015 MHz | N/A |
| Boost ClockDifferent | 2250 MHz | N/A |
| Memory ClockDifferent | 2000 MHz16 Gbps effective | 500 MHz1000 Mbps effective |
| GPU ClockDifferent | N/A | 625 MHz |
Memory
| Feature | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| Memory SizeDifferent | 16 GB | 512 MB |
| Memory TypeDifferent | GDDR6 | GDDR3 |
| Memory BusDifferent | 256 bit | 64 bit |
| BandwidthDifferent | 512.0 GB/s | 8.000 GB/s |
Render Config
| Feature | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| Shading UnitsDifferent | 5120 | 160 |
| TMUsDifferent | 320 | 8 |
| ROPsDifferent | 128 | 4 |
| Compute UnitsDifferent | 80 | 2 |
| RT CoresDifferent | 80 | N/A |
| L0 CacheDifferent | 32 KB per WGP | N/A |
| L1 CacheDifferent | 128 KB per Array | 8 KB (per CU) |
| L2 CacheDifferent | 4 MB | 128 KB |
| L3 CacheDifferent | 128 MB | N/A |
Theoretical Performance
| Feature | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| Pixel RateDifferent | 288.0 GPixel/s | 2.500 GPixel/s |
| Texture RateDifferent | 720.0 GTexel/s | 5.000 GTexel/s |
| FP16 (half)Different | 46.08 TFLOPS (2:1) | N/A |
| FP32 (float)Different | 23.04 TFLOPS | 200.0 GFLOPS |
| FP64 (double)Different | 1,440.0 GFLOPS (1:16) | N/A |
Board Design
| Feature | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| Slot WidthDifferent | Triple-slot | Single-slot |
| LengthDifferent | 267 mm10.5 inches | 168 mm6.6 inches |
| HeightDifferent | 120 mm4.7 inches | N/A |
| WidthDifferent | 50 mm2 inches | N/A |
| TDPDifferent | 300 W | 18 W |
| Suggested PSUDifferent | 700 W | 200 W |
| OutputsDifferent | 1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C | 1x DVI1x HDMI 1.3a1x VGA |
| Power ConnectorsDifferent | 2x 8-pin | None |
| Part NumberDifferent | 102-D412 | N/A |
| Board NumberDifferent | 109-D412A7-00_03 | 109-C26037-00A |
Graphics Features
| Feature | AMD Radeon RX 6900 XT | AMD Radeon HD 6450 |
|---|---|---|
| DirectXDifferent | 12 Ultimate (12_2) | 11.2 (11_0) |
| OpenGLDifferent | 4.6 | 4.4 |
| OpenCLDifferent | 2.1 | 1.2 |
| VulkanDifferent | 1.3 | N/A |
| Shader ModelDifferent | 6.8 | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
57
Detailed Features
More Comparisons with AMD Radeon RX 6900 XT
Compare AMD Radeon RX 6900 XT with other GPUs of similar performance
AMD Radeon RX 6900 XT vs GeForce RTX 4070 Ti
GeForce RTX 4070 Ti Performance113%
GeForce RTX 4070 Ti is 13% faster than AMD Radeon RX 6900 XT
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AMD Radeon RX 6900 XT vs GeForce RTX 5070
GeForce RTX 5070 Performance112%
GeForce RTX 5070 is 12% faster than AMD Radeon RX 6900 XT
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AMD Radeon RX 6900 XT vs GeForce RTX 3090
GeForce RTX 3090 Performance111%
GeForce RTX 3090 is 11% faster than AMD Radeon RX 6900 XT
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AMD Radeon RX 6900 XT vs GeForce RTX 3080 Ti
GeForce RTX 3080 Ti Performance109%
GeForce RTX 3080 Ti is 9% faster than AMD Radeon RX 6900 XT
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AMD Radeon RX 6900 XT vs GeForce RTX 4070 SUPER
GeForce RTX 4070 SUPER Performance106%
GeForce RTX 4070 SUPER is 6% faster than AMD Radeon RX 6900 XT
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AMD Radeon RX 6900 XT vs Radeon RX 7900 GRE
Radeon RX 7900 GRE Performance104%
Radeon RX 7900 GRE is 4% faster than AMD Radeon RX 6900 XT
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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
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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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