This time besides a simple performance comparison of the above discussed graphics accelerators, we will also answer the following questions:
- Will the Radeon HD 7870 from MSI overclocked to 1260/5920 MHz be able to perform as fast as a reference Radeon HD 7950?
- Will PowerColor PCS+ HD7850 overclocked to 1180/5920 MHz be able to outperform the reference Radeon HD 7870?
- Will the performance of XFX Radeon HD 7770 overclocked to 1200/1500 MHz be high enough to make you give up the idea of buying a Radeon HD 7850?
At the same time, MSI, PowerColor and XFX graphics cards were also tested at their nominal frequencies, which will allow us to estimate their advantage over the corresponding reference cards. However, since the new mainstream graphics cards from Nvidia aren’t there yet (we are talking about GeForce GTX 660), we also added the results of a GeForce GTX 560 Ti 448 cores from Asus. The cards on the performance diagrams are sorted out in descending order of their minimal retail price.
In the first semi-synthetic benchmark the overclocked MSI R7870 easily outperforms the reference HD 7950, and PowerColor PCS+ HD 7850 does the same thing to the reference Radeon HD 7870. However, XFX Radeon HD 7770 BE, even when we overclock it to 1200/6020 MHz, doesn’t catch up with Radeon HD 7850, which has lower clock frequencies. It was the narrow memory bus of only 128 bit that slowed down the HD 7770. Also we should point out that Asus GeForce GTX 560 Ti 448 cores did very well in this test, especially in overclocked mode.
3DMark 2011 benchmark is more resource-hungry and here you can once again see the same results as in 3DMark Vantage. We can’t point out anything else here.
Unigine Heaven Demo
We observe the same situation in Unigine Heaven, only the gaps between the graphics cards are much more prominent here.
S.T.A.L.K.E.R.: Call of Pripyat
The results in S.T.A.L.K.E.R.: Call of Pripyat are particularly interesting because MSI R7870 working at its default frequencies is right from the start faster than the reference Radeon HD 7950, and at overclocked speeds it gets unattainably far ahead. The S.T.A.L.K.E.R. engine obviously favors higher GPU clocks than its functionality. At the same time, PowerColor PCS+ HD 7850 at 1180/5920 MHz frequencies can only catch up with the reference Radeon HD 7870, which is OK, but not as impressive as we have just seen with MSI R7870. High frequencies of the XFX Radeon HD 7770 BE card once again do not save it from coming in last.
Left 4 Dead 2
We see the same situation in a not very resource-demanding Left 4 Dead 2 game:
Metro 2033: The Last Refuge
Unlike the previous games, overclocked MSI R7870 doesn’t outperform the reference Radeon HD 7950 in Metro 2033: The Last Refuge, although it does breathe down its neck big time. The overclocked PowerColor PCS+ HD 7850 easily breaks ahead of the Radeon HD 7870, and is just as fast as the latter in nominal mode. Asus GeForce GTX 560 Ti 448 cores card does pretty well, and XFX HD 7770 BE still lags far behind the reference Radeon HD 7850.