Radeon HD 6770 vs HD 7950
Aggregate performance score
HD 7950 outperforms HD 6770 by a whopping 281% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 372 | 708 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.37 | 0.24 |
| Architecture | GCN 1.0 (2012−2020) | TeraScale 2 (2009−2015) |
| GPU code name | Tahiti | Juniper |
| Market segment | Desktop | Desktop |
| Design | reference | reference |
| Release date | 31 January 2012 (12 years ago) | 21 January 2011 (13 years ago) |
| Launch price (MSRP) | $449 | $129 |
| Current price | $431 (1x MSRP) | $150 (1.2x MSRP) |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
HD 7950 has 471% better value for money than HD 6770.
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 1792 | 800 |
| Compute units | 28 | no data |
| Boost clock speed | 1250 MHz | 900 MHz |
| Number of transistors | 4,313 million | 1,040 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 200 Watt | 108 Watt |
| Texture fill rate | 89.60 | 34.00 |
| Floating-point performance | 2,867 gflops | 1,360.0 gflops |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Bus support | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Length | 267 mm | 198 mm |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 2x 6-pin | 1x 6-pin |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | GDDR5 | GDDR5 |
| Maximum RAM amount | 3 GB | 1 GB |
| Memory bus width | 384 Bit | 128 Bit |
| Memory clock speed | 1250 MHz | 1050 MHz |
| Memory bandwidth | 240 GB/s | 76.8 GB/s |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | 1x DVI, 1x HDMI, 2x mini-DisplayPort | 2x DVI, 1x HDMI, 2x mini-DisplayPort |
| Eyefinity | 1 | 1 |
| Number of Eyefinity displays | 6 | no data |
| HDMI | + | + |
| DisplayPort support | - | - |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| AppAcceleration | + | - |
| CrossFire | 1 | 1 |
| Enduro | - | - |
| FreeSync | 1 | no data |
| HD3D | - | - |
| PowerTune | + | - |
| TrueAudio | - | - |
| ZeroCore | + | - |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | DirectX® 11 | DirectX® 11 |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Mantle | - | - |
Synthetic benchmark performance
Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
HD 7950 outperforms HD 6770 by 281% based on our aggregate benchmark results.
Passmark
This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
Benchmark coverage: 25%
HD 7950 outperforms HD 6770 by 281% in Passmark.
3DMark Fire Strike Graphics
Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.
Benchmark coverage: 14%
HD 7950 outperforms HD 6770 by 393% in 3DMark Fire Strike Graphics.
Unigine Heaven 4.0
This is an old DirectX 11 benchmark, a newer version of Unigine 3.0 with relatively small differences. It displays a fantasy medieval town sprawling over several flying islands. The benchmark is still sometimes used, despite its significant age, as it was released back in 2013.
Benchmark coverage: 1%
HD 7950 outperforms HD 6770 by 312% in Unigine Heaven 4.0.
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Pros & cons summary
| Performance score | 12.32 | 3.23 |
| Recency | 31 January 2012 | 21 January 2011 |
| Cost | $449 | $129 |
| Maximum RAM amount | 3 GB | 1 GB |
| Chip lithography | 28 nm | 40 nm |
| Power consumption (TDP) | 200 Watt | 108 Watt |
The Radeon HD 7950 is our recommended choice as it beats the Radeon HD 6770 in performance tests.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
