Compare Performance: AMD Radeon HD7770 1 GB vs. Radeon HD7750 1 GB graphic cards


Read the comparison between AMD Radeon HD7770 1 GB vs Radeon HD7750 l GB in terms of performance and specifications with each other and its predecessor graphic cards. Read on to know how these graphic cards fared in our different tests

While AMD Radeon HD7770 GB vs. Radeon HD7750 GB are benchmarked more towards the high end, they still demonstrate representative performance between cards, although we appreciate that few users will be pairing a £l20 GPU with a £500 2,560x1,600 display for gaming. In Arma II, the HD 7770 1GB accounted reasonably well for itself, with a minimum frame rate of 3lfps at l,920x1,080 with 4x4 AA. This edges out the HD 6850 1GB by 7 percent. Meanwhile, the HD 7750 1GB matched the 30-month-old HD 5770 GB in the same test, with a minimum frame rate of 25fps.At 2,560x 1,600 with 4xAA, the HD 7750 1GB slipped further behind the HD 57701GB, while the HD 7770 1GB again trumped the HD 6850 1GB.

Peformance comparison between AMD Radeon HD7770 1 GB vs. Radeon HD7750 1 GB in Battlefield 3 game


Battlefield 3 is an extremely demanding game at the Ultra detail level, and at 1,920 x 1,080 with 4xAA, the HD 7770 1GB produced a minimum frame rate of 23fps; again just piping HD6850 1GB to the post. The HD7750 1GB closely matched the performance of the HD 5770 1GB with a minimum frame rate of 17fps. However, at 2,560 x l,600 in Battlefield 3, all 1GB cards suffer due to insufficient VRAM, and the HD 7770 1GB and HD7750 are no different. The HD6850 1GB proved marginally faster than the HD7770 1GB with a minimum frame rate of l0 fps - this is still far from the 25fps considered playable though.

Performance comparison between AMD Radeon HD7770 1 GB vs. Radeon HD7750 1 GB in game Dirt 3


In Dirt 3,the HD 7770 1GB again found itself trailing behind the HD 68501 GB, with a minimum frame rate of 47 fps compared to the HD 6850 1GB's 50 fps at 1,920 x l,080 with 4xAA. The HD7750 1GB was also slower than its previous-generation competitor, with the HD 5770 1GB trumping it with a minimum frame rate of 3 8fps compared to the HD 7750 1 GB's 35fps. At 2,560 x 1,600 with 4xAA, the HD 7770 1GB and HD 6850 1GB performed very similarly with a minimum frame rate of 30fps; again, the HD 7750 1GB is bettered by the HD 5770 1GB, thanks to a minimum frame rate of just
21 fps compared to the HD 57701 GB's 24 fps.

Performance comparison between AMD Radeon HD7770 1 GB vs. Radeon HD7750 1 GB in Skyrim


Finally, in Skyrim, the HD 7770 1GB was again unable to better the HD6850 1GB at 1,920 x 1,080 with 4xAA, thanks to a minimum frame rate of 36 fps compared to the HD6850 1GB's 38fps. The HD 7750 1GB matched the HD 57701GB here, with both reaching a minimum frame rate of 30 fps. While neither the HD 7770 1GB nor HD 7750 1GB make much of a step forwards in performance, they make great strides in terms of power consumption and thermal performance. When idle, both cards contributed to a system power draw of just 82W and 81W respectively. Under load, the HD 7770 1GB drew 142W while the PCI-E power connector-less HD 7750 1GB saw the system pull just 121W under load. That's a 40W reduction compared to the HD 5770 1GB, with the HD 7770 1GB drawing more than 33W less than the HD 6850 1GB. Thermal performance was excellent too, with both cards' temperatures staying below a delta T of 12 0C when idle and reaching 44°C under load. Both were pleasingly quiet too.

Conclusion
It was expected that the HD 7770 1GB and HD 7750 1GB to offer a big step forwards in both performance and power consumption, but only the latter holds true. The HD 7770 1GB performs largely the same or slower than the HD 6850 1GB, which, although now end-of life, sells for £10- £20 less. The HD 6870 1GB also costs just a few quid more than the HD 7770 1GB, yet out performs it by a significant margin.

Read spec comparison between AMD Radeon HD7770 GB vs. Radeon HD7750 GB


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