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  Best GPU benchmarks

Radeon HD 7750

amd hd7750  The Radeon HD 7750 is a completely different graphics card, although it is based on the same chip. A TDP of 55W means this model doesn't need an extra power connector - just what the PCI-E x16 slot provides is enough. At 16 cm (6.5") long, the Radeon HD 7750 fits into most compact chassis and HTPCs.
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Radeon HD 7770

hd7770  Officially, the top card on the Cape Verde GPU is called the Radeon HD 7770 GHz Edition, which indicates a GPU frequency of one gigahertz. The Tahiti GPU has 4.31 billion transistors on a 365 mm² silicon wafer. Cape Verde has 1.5 billion transistors on a 123mm2 wafer.
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Radeon HD 7850

Radeon HD 7850 The reference Radeon HD 7850 card looks identical to the older Radeon HD 7870 model with one exception: this card has one 6-pin auxiliary power connector instead of two. This is a consequence of the lower TDP of 135W.
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Radeon HD 7870

amd radeon_hd7870 With the release of the Radeon HD 7800 line, AMD has completed the release of the new Southern Islands family to the market. Mid-range AMD solutions support all modern industry standards: GDDR5, PCI Express 3.0 and their future versions - DirectX 11.1.
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Radeon HD 7950

amd radeon_hd_7970-  Physically, the Radeon HD 7950 is identical to the Radeon HD 7970, with the exception of one distinguishing feature: both auxiliary power connectors are six-pin (6-pin). This is the result of lower power consumption: the maximum value is less than 225W.
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Radeon HD 7970

amd radeon_hd_7970-  The Tahiti GPU is manufactured using the advanced 28nm process technology at  TSMC . The structural structure of the GPU is shown in the image below, as you can see, "Tahiti" uses 32 calculation units (CU) with 64 ALUs (arithmetic and logic unit) per CU, which is a total of 2048 ALUs.
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