GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
NVIDIA GeForce RTX 4090
1081%
1081%
AMD Radeon HD 6990
9%
9%
NVIDIA GeForce RTX 4090 is approximately 1072% faster
Technical Specifications
| Specification | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| Graphics ProcessorDifferent | AD102 | Antilles x2 |
| CoresDifferent | 16384 | 1536 x2 |
| TMUsDifferent | 512 | 96 x2 |
| ROPsDifferent | 176 | 32 x2 |
| Memory SizeDifferent | 24 GB | 2 GB x2 |
| Memory TypeDifferent | GDDR6X | GDDR5 |
| Bus WidthDifferent | 384 bit | 256 bit x2 |
Graphics Processor
| Feature | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| GPU NameDifferent | AD102 | Antilles |
| GPU VariantDifferent | AD102-300-A1 | Antilles XT(215-0807027) |
| ArchitectureDifferent | Ada Lovelace | TeraScale 3 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 5 nm | 40 nm |
| TransistorsDifferent | 76,300 million | 2,640 million |
| DensityDifferent | 125.3M / mm² | 6.8M / mm² |
| Die SizeDifferent | 609 mm² | 389 mm² |
Graphics Card
| Feature | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| Release DateDifferent | Sep 20th, 2022 | Mar 8th, 2011 |
| AvailabilityDifferent | Oct 12th, 2022 | N/A |
| GenerationDifferent | GeForce 40 | Northern Islands(HD 6900) |
| PredecessorDifferent | GeForce 30 | Evergreen |
| SuccessorDifferent | GeForce 50 | Southern Islands |
| ProductionDifferent | Active | End-of-life |
| Launch PriceDifferent | 1,599 USD | 699 USD |
| Current PriceDifferent | Amazon/Newegg | N/A |
| Bus InterfaceDifferent | PCIe 4.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 76 in our database | 47 in our database |
Clock Speeds
| Feature | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| Base ClockDifferent | 2235 MHz | N/A |
| Boost ClockDifferent | 2520 MHz | N/A |
| Memory ClockDifferent | 1313 MHz21 Gbps effective | 1250 MHz5 Gbps effective |
| GPU ClockDifferent | N/A | 830 MHz |
Memory
| Feature | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| Memory SizeDifferent | 24 GB | 2 GB |
| Memory TypeDifferent | GDDR6X | GDDR5 |
| Memory BusDifferent | 384 bit | 256 bit |
| BandwidthDifferent | 1.01 TB/s | 160.0 GB/s |
Render Config
| Feature | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| Shading UnitsDifferent | 16384 | 1536 |
| TMUsDifferent | 512 | 96 |
| ROPsDifferent | 176 | 32 |
| SM CountDifferent | 128 | N/A |
| Tensor CoresDifferent | 512 | N/A |
| RT CoresDifferent | 128 | N/A |
| L1 CacheDifferent | 128 KB (per SM) | 8 KB (per CU) |
| L2 CacheDifferent | 72 MB | 512 KB |
| Compute UnitsDifferent | N/A | 24 |
Theoretical Performance
| Feature | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| Pixel RateDifferent | 443.5 GPixel/s | 26.56 GPixel/s |
| Texture RateDifferent | 1,290.2 GTexel/s | 79.68 GTexel/s |
| FP16 (half)Different | 82.58 TFLOPS (1:1) | N/A |
| FP32 (float)Different | 82.58 TFLOPS | 2.550 TFLOPS |
| FP64 (double)Different | 1,290.2 GFLOPS (1:64) | 637.4 GFLOPS (1:4) |
Board Design
| Feature | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| Slot WidthDifferent | Triple-slot | Dual-slot |
| LengthDifferent | 304 mm12 inches | 310 mm12.2 inches |
| HeightDifferent | 137 mm5.4 inches | 115 mm4.5 inches |
| WidthDifferent | 61 mm2.4 inches | 40 mm1.6 inches |
| TDPDifferent | 450 W | 375 W |
| Suggested PSUDifferent | 850 W | 750 W |
| OutputsDifferent | 1x HDMI 2.13x DisplayPort 1.4a | 1x DVI4x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | 1x 16-pin | 2x 8-pin |
| Board NumberDifferent | PG139 SKU 330 | 109-C20647-00 |
Graphics Features
| Feature | NVIDIA GeForce RTX 4090 | AMD Radeon HD 6990 |
|---|---|---|
| DirectXDifferent | 12 Ultimate (12_2) | 11.2 (11_0) |
| OpenGLDifferent | 4.6 | 4.4 |
| OpenCLDifferent | 3.0 | 1.2 |
| VulkanDifferent | 1.3 | N/A |
| CUDADifferent | 8.9 | N/A |
| Shader ModelDifferent | 6.8 | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
55
Detailed Features
More Comparisons with NVIDIA GeForce RTX 4090
Compare NVIDIA GeForce RTX 4090 with other GPUs of similar performance
NVIDIA GeForce RTX 4090 vs GeForce RTX 4090
GeForce RTX 4090 Performance100%
GeForce RTX 4090 is 0% slower than NVIDIA GeForce RTX 4090
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NVIDIA GeForce RTX 4090 vs GeForce RTX 5080
GeForce RTX 5080 Performance86%
GeForce RTX 5080 is 14% slower than NVIDIA GeForce RTX 4090
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NVIDIA GeForce RTX 4090 vs GeForce RTX 4090
GeForce RTX 4090 Performance100%
GeForce RTX 4090 is 0% slower than NVIDIA GeForce RTX 4090
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NVIDIA GeForce RTX 4090 vs GeForce RTX 4090
GeForce RTX 4090 Performance100%
GeForce RTX 4090 is 0% slower than NVIDIA GeForce RTX 4090
Compare Detailed Specs
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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