GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
NVIDIA GeForce GTX 660
82%
82%
AMD Radeon HD 7970
156%
156%
AMD Radeon HD 7970 is approximately 74% faster
Technical Specifications
| Specification | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| Graphics ProcessorDifferent | GK106 | Tahiti |
| CoresDifferent | 960 | 2048 |
| TMUsDifferent | 80 | 128 |
| ROPsDifferent | 24 | 32 |
| Memory SizeDifferent | 2 GB | 3 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 192 bit | 384 bit |
Graphics Processor
| Feature | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| GPU NameDifferent | GK106 | Tahiti |
| GPU VariantDifferent | GK106-400-A1 | Tahiti XT(215-0821060) |
| ArchitectureDifferent | Kepler | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| TransistorsDifferent | 2,540 million | 4,313 million |
| DensityDifferent | 11.5M / mm² | 12.3M / mm² |
| Die SizeDifferent | 221 mm² | 352 mm² |
| Chip PackageDifferent | BGA-1425 | N/A |
Graphics Card
| Feature | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| Release DateDifferent | Sep 6th, 2012 | Jan 9th, 2012 |
| GenerationDifferent | GeForce 600 | Southern Islands(HD 7900) |
| PredecessorDifferent | GeForce 500 | Northern Islands |
| SuccessorDifferent | GeForce 700 | Sea Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 229 USD | 549 USD |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| ReviewsDifferent | 77 in our database | 191 in our database |
| AnnouncedDifferent | N/A | Dec 22nd, 2011 |
Clock Speeds
| Feature | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| Base ClockDifferent | 980 MHz | N/A |
| Boost ClockDifferent | 1032 MHz | N/A |
| Memory ClockDifferent | 1502 MHz6 Gbps effective | 1375 MHz5.5 Gbps effective |
| GPU ClockDifferent | N/A | 925 MHz |
Memory
| Feature | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| Memory SizeDifferent | 2 GB | 3 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory BusDifferent | 192 bit | 384 bit |
| BandwidthDifferent | 144.2 GB/s | 264.0 GB/s |
Render Config
| Feature | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| Shading UnitsDifferent | 960 | 2048 |
| TMUsDifferent | 80 | 128 |
| ROPsDifferent | 24 | 32 |
| SMX CountDifferent | 5 | N/A |
| L1 CacheDifferent | 16 KB (per SMX) | 16 KB (per CU) |
| L2 CacheDifferent | 384 KB | 768 KB |
| Compute UnitsDifferent | N/A | 32 |
Theoretical Performance
| Feature | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| Pixel RateDifferent | 20.64 GPixel/s | 29.60 GPixel/s |
| Texture RateDifferent | 82.56 GTexel/s | 118.4 GTexel/s |
| FP32 (float)Different | 1.981 TFLOPS | 3.789 TFLOPS |
| FP64 (double)Different | 82.56 GFLOPS (1:24) | 947.2 GFLOPS (1:4) |
Board Design
| Feature | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 241 mm9.5 inches | 275 mm10.8 inches |
| TDPDifferent | 140 W | 250 W |
| Suggested PSUDifferent | 300 W | 600 W |
| OutputsDifferent | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | 1x 6-pin | 1x 6-pin + 1x 8-pin |
| Board NumberDifferent | P2030 SKU 0 | 109-C38637-00 |
| HeightDifferent | N/A | 111 mm4.4 inches |
| WidthDifferent | N/A | 38 mm1.5 inches |
Graphics Features
| Feature | NVIDIA GeForce GTX 660 | AMD Radeon HD 7970 |
|---|---|---|
| DirectXDifferent | 12 (11_0) | 12 (11_1) |
| OpenGL | 4.6 | 4.6 |
| OpenCLDifferent | 3.0 | 2.1 (1.2) |
| VulkanDifferent | 1.2.175 | 1.2.170 |
| CUDADifferent | 3.0 | N/A |
| Shader Model | 6.5 (5.1) | 6.5 (5.1) |
Comparison Summary
7
Specifications Compared
8
Feature Categories
52
Detailed Features
More Comparisons with NVIDIA GeForce GTX 660
Compare NVIDIA GeForce GTX 660 with other GPUs of similar performance
NVIDIA GeForce GTX 660 vs Radeon HD 5970
Radeon HD 5970 Performance117%
Radeon HD 5970 is 17% faster than NVIDIA GeForce GTX 660
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NVIDIA GeForce GTX 660 vs GeForce GTX 1630
GeForce GTX 1630 Performance117%
GeForce GTX 1630 is 17% faster than NVIDIA GeForce GTX 660
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NVIDIA GeForce GTX 660 vs GeForce GTX 1050
GeForce GTX 1050 Performance115%
GeForce GTX 1050 is 15% faster than NVIDIA GeForce GTX 660
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NVIDIA GeForce GTX 660 vs GeForce GTX 760
GeForce GTX 760 Performance114%
GeForce GTX 760 is 14% faster than NVIDIA GeForce GTX 660
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NVIDIA GeForce GTX 660 vs GeForce GTX 580
GeForce GTX 580 Performance114%
GeForce GTX 580 is 14% faster than NVIDIA GeForce GTX 660
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NVIDIA GeForce GTX 660 vs GeForce GTX 660 Ti
GeForce GTX 660 Ti Performance113%
GeForce GTX 660 Ti is 13% faster than NVIDIA GeForce GTX 660
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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
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AMD Radeon HD 7970 vs GeForce GTX 590
GeForce GTX 590 Performance113%
GeForce GTX 590 is 13% faster than AMD Radeon HD 7970
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AMD Radeon HD 7970 vs Radeon R9 280X
Radeon R9 280X Performance111%
Radeon R9 280X is 11% faster than AMD Radeon HD 7970
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AMD Radeon HD 7970 vs Radeon HD 6990
Radeon HD 6990 Performance109%
Radeon HD 6990 is 9% faster than AMD Radeon HD 7970
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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
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AMD Radeon HD 7970 vs GeForce GTX 680
GeForce GTX 680 Performance101%
GeForce GTX 680 is 1% faster than AMD Radeon HD 7970
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