GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 7990
243%
243%
AMD Radeon HD 7850
41%
41%
AMD Radeon HD 7990 is approximately 202% faster
Technical Specifications
| Specification | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| Graphics ProcessorDifferent | Malta x2 | Pitcairn |
| CoresDifferent | 2048 x2 | 1024 |
| TMUsDifferent | 128 x2 | 64 |
| ROPsDifferent | 32 x2 | 32 |
| Memory SizeDifferent | 3 GB x2 | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 384 bit x2 | 256 bit |
Graphics Processor
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| GPU NameDifferent | Malta | Pitcairn |
| GPU VariantDifferent | Malta XT(215-0849026) | Pitcairn PRO(215-0828062) |
| Architecture | GCN 1.0 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| TransistorsDifferent | 4,313 million | 2,800 million |
| DensityDifferent | 11.8M / mm² | 13.2M / mm² |
| Die SizeDifferent | 365 mm² | 212 mm² |
| Chip PackageDifferent | N/A | FCBGA-1737 |
Graphics Card
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| Release DateDifferent | Apr 24th, 2013 | Mar 5th, 2012 |
| GenerationDifferent | Southern Islands(HD 7900) | Southern Islands(HD 7800) |
| Predecessor | Northern Islands | Northern Islands |
| Successor | Sea Islands | Sea Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 999 USD | 249 USD |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| ReviewsDifferent | 37 in our database | 71 in our database |
Clock Speeds
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| Base ClockDifferent | 950 MHz | N/A |
| Boost ClockDifferent | 1000 MHz | N/A |
| Memory ClockDifferent | 1500 MHz6 Gbps effective | 1200 MHz4.8 Gbps effective |
| GPU ClockDifferent | N/A | 860 MHz |
Memory
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| Memory SizeDifferent | 3 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory BusDifferent | 384 bit | 256 bit |
| BandwidthDifferent | 288.0 GB/s | 153.6 GB/s |
Render Config
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| Shading UnitsDifferent | 2048 | 1024 |
| TMUsDifferent | 128 | 64 |
| ROPs | 32 | 32 |
| Compute UnitsDifferent | 32 | 16 |
| L1 Cache | 16 KB (per CU) | 16 KB (per CU) |
| L2 CacheDifferent | 768 KB | 512 KB |
Theoretical Performance
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| Pixel RateDifferent | 32.00 GPixel/s | 27.52 GPixel/s |
| Texture RateDifferent | 128.0 GTexel/s | 55.04 GTexel/s |
| FP32 (float)Different | 4.096 TFLOPS | 1.761 TFLOPS |
| FP64 (double)Different | 1,024.0 GFLOPS (1:4) | 110.1 GFLOPS (1:16) |
Board Design
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 304 mm12 inches | 210 mm8.3 inches |
| HeightDifferent | 106 mm4.2 inches | N/A |
| WidthDifferent | 38 mm1.5 inches | N/A |
| TDPDifferent | 375 W | 130 W |
| Suggested PSUDifferent | 750 W | 300 W |
| OutputsDifferent | 1x DVI4x mini-DisplayPort 1.2 | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | 2x 8-pin | 1x 6-pin |
| Board NumberDifferent | 109-C47637-00A_02 | 109-C40147-00, 109-C40337-00A |
Graphics Features
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 7850 |
|---|---|---|
| DirectX | 12 (11_1) | 12 (11_1) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 (1.2) | 2.1 (1.2) |
| VulkanDifferent | 1.2.175 | 1.2.170 |
| Shader Model | 6.5 (5.1) | 6.5 (5.1) |
Comparison Summary
7
Specifications Compared
8
Feature Categories
49
Detailed Features
More Comparisons with AMD Radeon HD 7990
Compare AMD Radeon HD 7990 with other GPUs of similar performance
AMD Radeon HD 7990 vs Radeon RX 590
Radeon RX 590 Performance115%
Radeon RX 590 is 15% faster than AMD Radeon HD 7990
Compare Detailed Specs
AMD Radeon HD 7990 vs Radeon R9 FURY
Radeon R9 FURY Performance112%
Radeon R9 FURY is 12% faster than AMD Radeon HD 7990
Compare Detailed Specs
AMD Radeon HD 7990 vs GeForce GTX 980
GeForce GTX 980 Performance111%
GeForce GTX 980 is 11% faster than AMD Radeon HD 7990
Compare Detailed Specs
AMD Radeon HD 7990 vs GeForce GTX 1650 SUPER
GeForce GTX 1650 SUPER Performance110%
GeForce GTX 1650 SUPER is 10% faster than AMD Radeon HD 7990
Compare Detailed Specs
AMD Radeon HD 7990 vs Radeon RX 6500 XT
Radeon RX 6500 XT Performance109%
Radeon RX 6500 XT is 9% faster than AMD Radeon HD 7990
Compare Detailed Specs
AMD Radeon HD 7990 vs Radeon RX 5500 XT
Radeon RX 5500 XT Performance108%
Radeon RX 5500 XT is 8% faster than AMD Radeon HD 7990
Compare Detailed Specs
More Comparisons with AMD Radeon HD 7850
Compare AMD Radeon HD 7850 with other GPUs of similar performance
AMD Radeon HD 7850 vs GeForce GTX 950
GeForce GTX 950 Performance120%
GeForce GTX 950 is 20% faster than AMD Radeon HD 7850
Compare Detailed Specs
AMD Radeon HD 7850 vs Radeon RX 560
Radeon RX 560 Performance113%
Radeon RX 560 is 13% faster than AMD Radeon HD 7850
Compare Detailed Specs
AMD Radeon HD 7850 vs GeForce GTX 570
GeForce GTX 570 Performance111%
GeForce GTX 570 is 11% faster than AMD Radeon HD 7850
Compare Detailed Specs
AMD Radeon HD 7850 vs GeForce GTX 660
GeForce GTX 660 Performance111%
GeForce GTX 660 is 11% faster than AMD Radeon HD 7850
Compare Detailed Specs
AMD Radeon HD 7850 vs Radeon R7 370
Radeon R7 370 Performance110%
Radeon R7 370 is 10% faster than AMD Radeon HD 7850
Compare Detailed Specs
AMD Radeon HD 7850 vs Radeon HD 6970
Radeon HD 6970 Performance106%
Radeon HD 6970 is 6% faster than AMD Radeon HD 7850
Compare Detailed Specs