Introduction
AMD's HD 7770 has been out for a while now and most board partners have released their customs designs. The card is based on AMD 28 nanometer silicon combined with the GCN shader architecture which promises lower power consumption at increased performance.
Sapphire's HD 770 Vapor-X uses the company's famous vapor chamber cooling solution and greatly increased clock speeds of 1100 MHz GPU and 1300 MHz memory.
HD 7770 Market Segment Analysis | Radeon HD 5770 | Radeon HD 7750 | GeForce GTX 550 Ti | Radeon HD 6790 | Radeon HD 6850 | Radeon HD 7770 | Sapphire HD 7770 Vapor-X | GeForce GTX 460 | Radeon HD 6870 | GeForce GTX 560 |
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Shader Units | 800 | 512 | 192 | 800 | 960 | 640 | 640 | 336 | 1120 | 336 |
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ROPs | 16 | 16 | 24 | 16 | 32 | 16 | 16 | 32 | 32 | 32 |
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Graphics Processor | Juniper | Cape Verde | GF116 | Barts | Barts | Cape Verde | Cape Verde | GF104 | Barts | GF114 |
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Transistors | 1040M | 1500M | 1170M | 1700M | 1700M | 1500M | 1500M | 1950M | 1700M | 1950M |
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Memory Size | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB |
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Memory Bus Width | 128 bit | 128 bit | 192 bit | 256 bit | 256 bit | 128 bit | 128 bit | 256 bit | 256 bit | 256 bit |
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Core Clock | 850 MHz | 800 MHz | 900 MHz | 840 MHz | 775 MHz | 1000 MHz | 1100 MHz | 675 MHz | 900 MHz | 810 MHz |
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Memory Clock | 1200 MHz | 1125 MHz | 1026 MHz | 1050 MHz | 1000 MHz | 1125 MHz | 1300 MHz | 900 MHz | 1050 MHz | 1002 MHz |
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Price | $110 | $110 | $120 | $120 | $140 | $130 | $150 | $140 | $155 | $170 |
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Packaging
Contents
You will receive:
- Graphics card
- Driver CD + Documentation
- HDMI Cable
- Power cable
- DVI Adapter
The Card
Sapphire's cooler uses a stylish design that is dominated by black and white which gives the card an elegant touch.
The card requires two slots in your system.
Display connectivity options include two DVI ports, one full size HDMI port and one full-size DisplayPort. You may use all the outputs at the same time, thanks to AMD's display output architecture.
An HDMI sound device is included in the GPU, too. It is HDMI 1.4a compatible which includes HD audio and support for Blu-ray 3D movies. The DisplayPort outputs are version 1.2 which enables the use of hubs and Multi-Stream transport.
You may combine up to two HD 7770 cards from any vendor in a multi-GPU CrossFire configuration for higher framerates or better image quality settings.
Pictured above are photos of the front and back, showing the disassembled board. High-res versions are also available (
front,
back). If you choose to use these images for voltmods etc., please include a link back to this site or let us post your article.