Low Windows Experience Index for SSD

Defiantly a driver issue

 

Have a look here http://forums.macrumors.com/showthread.php?t=1699002
I made some deep testing and here are my thoughts: http://forums.macrumors.com/showpost.php?p=18705715&postcount=25

 

4k rates and Access times are very poor. Try the tweak I've mentioned in the link above and rerun the benchmark. Do not forget to switch to the High Perfomance mode before.

Generic AHCI driver - yes, all latest Macs with Bootcamp use them. But the thing is not in bootcamp itself. The thing is in the ssd form-factor - it is no longer a SATA device, but a PCI-express now. There is no need for a specific driver for PCI-e devices in Windows.

And one more advice - just go for Windows 8.1, it handles this new type of ssds way much better than Windows 7 does.

 

Yes, it will reduce your battery life, no it won't hurt or wear your CPU.

 

Could you run the CrystalDisk Benchmark after resetting SMC and/or applying some tweaks plz?

 

There's definitely something wrong there. As a point of reference, here is my Windows Experience Index with my Late 2013 iMac (also Haswell), using not the internal PCIe SSD but rather a Samsung 840 EVO in a Delock Thunderbolt enclosure.



And here are my results with the AS SSD Benchmark

 

low windows experience index on windows 7 and 1TB SSD

Thank you lipid for the thorough research you did. I have the same issue of a windows experience index of only 5,9 for the disk subsystem with a mid 2014 rmbp and a 1TB SSD. However i run windows 7 ulitmate from bootcamp and the processor states can not be set as in windows 8.1 (or can it?)

Any idea of what i can do, otherwise i'll need to return the system. My colleague has a 2013 rMBP and with a 512 SSD and he doesn't have the issue.

Any advice will be greatly appreciated!

 

My advice is - just install Windows 8.1 with the latest updates and let it go. I don't care about any benchmarks anymore, I just run 8.1 and everything is perfect. Except for the 'idle 30% cpu load'-thing - that's a present from Yosemite\EFI Update.. But the sleep-wake workaround fixes it, so everything is fine. Just don't think about these numbers and scores from benchmarks, they mean nothing. Think about how your system works as a whole. It works much faster than any pc-based laptop from 2013-2014 for this money and that's the point.

 

You'd really return an Apple computer for poor Windows performance? If that's the case then why not just get a Windows laptop with a PCIe SSD?

 

Unfortunately our workflow is such that we need very very good Widows machines as well. The only thing that came close to the rMBP is the Dell M3800. We travel a lot and lugging the other bricks around became such a hassle.

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What kind of battery life are you getting? And is the system real world fast?

Thanks for all the help!

 

About 7-8 hours of average load usage. Chrome (most of the time), MS Office, Adobe Acrobat. Power plan is default Balanced without any changes.

Yes, the system is very stable and fast. No complains. I use 1680x1050 with no scaling or native 2560x1600 with maximum scaling depending on the program I'm working with.

 

Thanks again. So bog standard windows 8.1 with the wake up fix? Nothing else? And you get 8 hour in the windows bootcamp. Wow. does windows 8.1 the do better with the power management of the rmbp? must do...

Thank you again for all the replies. you did help a lot!