Introduction
Today, AMD launched its Radeon HD 7700 series to solidify its competitiveness in the sub-$200 graphics card market segment. The launch consists of the Radeon HD 7770 and Radeon HD 7750, both capable of 2-way CrossFire. While we don't expect anyone to buy two HD 7700 series in one go, since there could (we're figuring that out in this review) be better single graphics card options in higher price points, CrossFire capability allows users incremental upgrades.
People can get one HD 7700 series graphics card now, and add on a second card later, as their performance needs go up. A CrossFire upgrade could also let people game on higher resolutions than what a single HD 7700 series graphics card is meant for, so really, the 'incremental upgrade' argument is the only sensible way we see people buying two of these cards.
What's more, AMD's architecture allows you to pair between different SKUs in a series. For example, you can pair a Radeon HD 7770 with a Radeon HD 7750, so that adds a lot of flexibility. In this review, we will measure the performance of two HD 7770 in CrossFire, and two HD 7750 in CrossFire.
But before you proceed, make sure you have a clear understanding of what the HD 7700 series as single-card solutions are all about, go through any of the reviews linked below.
HD 7750 and 7770 CrossFire Review Market Segment Analysis | Radeon HD 5770 | Radeon HD 7750 | GeForce GTX 550 Ti | Radeon HD 6790 | Radeon HD 6850 | GeForce GTX 460 | GeForce GTX 460 | Radeon HD 6870 | Radeon HD 7770 | GeForce GTX 560 | GeForce GTX 560 Ti | Radeon HD 7750 CrossFire | Radeon HD 6950 | Radeon HD 7770 Crossfire | GeForce GTX 570 | Radeon HD 6970 |
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Shader Units | 800 | 512 | 192 | 800 | 960 | 336 | 336 | 1120 | 640 | 336 | 384 | 2x 512 | 1408 | 2x 640 | 480 | 1536 |
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ROPs | 16 | 16 | 24 | 16 | 32 | 24 | 32 | 32 | 16 | 32 | 32 | 2x 16 | 32 | 2x 16 | 40 | 32 |
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Graphics Processor | Juniper | Cape Verde | GF116 | Barts | Barts | GF104 | GF104 | Barts | Cape Verde | GF114 | GF114 | 2x Cape Verde | Cayman | 2x Cape Verde | GF110 | Cayman |
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Transistors | 1040M | 1500M | 1170M | 1700M | 1700M | 1950M | 1950M | 1700M | 1500M | 1950M | 1950M | 2x 1500M | 2640M | 2x 1500M | 3000M | 2640M |
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Memory Size | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 768 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 1024 MB | 2x 1024 MB | 2048 MB | 2x 1024 MB | 1280 MB | 2048 MB |
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Memory Bus Width | 128 bit | 128 bit | 192 bit | 256 bit | 256 bit | 192 bit | 256 bit | 256 bit | 128 bit | 256 bit | 256 bit | 2x 128 bit | 256 bit | 2x 128 bit | 320 bit | 256 bit |
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Core Clock | 850 MHz | 800 MHz | 900 MHz | 840 MHz | 775 MHz | 675 MHz | 675 MHz | 900 MHz | 1000 MHz | 810 MHz | 823 MHz | 800 MHz | 800 MHz | 1000 MHz | 732 MHz | 880 MHz |
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Memory Clock | 1200 MHz | 1125 MHz | 1026 MHz | 1050 MHz | 1000 MHz | 900 MHz | 900 MHz | 1050 MHz | 1125 MHz | 1002 MHz | 1002 MHz | 1125 MHz | 1250 MHz | 1125 MHz | 950 MHz | 1375 MHz |
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Price | $105 | $110 | $120 | $125 | $135 | $140 | $140 | $155 | $160 | $170 | $210 | $220 | $240 | $320 | $330 | $340 |
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Test System
Test System - VGA Rev. 16 |
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CPU: | Intel Core i7 920 @ 3.8 GHz (Bloomfield, 8192 KB Cache) |
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Motherboard: | Gigabyte X58 Extreme Intel X58 & ICH10R |
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Memory: | 3x 2048 MB Mushkin Redline XP3-12800 DDR3 @ 1520 MHz 8-7-7-16 |
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Harddisk: | WD Caviar Blue WD5000AAKS 500 GB |
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Power Supply: | Antec HCP-1200 1200W |
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Software: | Windows 7 64-bit Service Pack 1 |
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Drivers: | NVIDIA: 285.62 ATI: Catalyst 11.12 HD 7950 & 7970: 8.921.2 RC11 HD 7750 & HD 7770: 8.932.2 |
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Display: | LG Flatron W3000H 30" 2560x1600
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Benchmark scores in other reviews are only comparable when exactly the same hardware & software configuration is used as in this review.- All video card results were obtained on this exact system with the exact same configuration.
- All games were set to their highest quality setting unless indicated otherwise.
- AA and AF are applied via in-game settings, not via the driver's control panel.
Each benchmark was tested at the following settings and resolution:
- 1024 x 768, No Anti-aliasing. This is a standard resolution without demanding display settings.
- 1280 x 1024, 2x Anti-aliasing. Common resolution for most smaller flatscreens today (17" - 19"). A bit of eye candy turned on in the drivers.
- 1680 x 1050, 4x Anti-aliasing. Most common widescreen resolution on larger displays (19" - 22"). Very good looking driver graphics settings.
- 1920 x 1200, 4x Anti-aliasing. Typical widescreen resolution for large displays (22" - 26"). Very good looking driver graphics settings.
- 2560 x 1600, 4x Anti-aliasing. Highest possible resolution for commonly available displays (30"). Very good looking driver graphics settings.
Aliens vs. Predator
Aliens vs. Predator is based on a merger of the Aliens and the Predators franchise: two legendary alien species that are in conflict with each other, fighting to the death with human marines caught in between. The first person shooter game was developed by Rebellion Studios, who also developed the first AVP PC title and released in February 2010. It is one of the first DirectX 11 games with support for new features like tesselation, which is why AMD heavily promoted it at the time of their DX 11 card launches. We use the AVP benchmark utility with tesselation and advanced DX11 shadows enabled.