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Windows 7: SSD: switching from IDE to AHCI...real world differences?

26 Jan 2018   #11

Win 7 Pro SP1 64 bit

I was hoping to edit my previous post and not add yet another post, but edit option was gone.

Anyway, I came across a tutorial on tweaking Win 7 for SSDs and got some interesting results. Defrag was already disabled, and Trim already enabled, but as per the tutorial I deactivated Prefetch and Superfetch in the registry, disabled Superfetch in Services, and noticed everything may seem just slightly quicker. So I ran an SS SSD benchmark test twice and got the following consistent results compared to pre-tweak on the Samsung 850 EVO 500GB:

Before tweak (Read/Write)
Seq: 233.32/203.66
4K: 32.31/56.75
4K-64Thrd: 38.12/83.63
Acc Time: .099/.054
SCORE: 94/161

After tweak (Read/Write)
Seq: 243.53/236.01
4K: 31.95/61.69
4K-64Thrd: 38.49/86.10
Acc Time: 0.98/.051
SCORE: 96/171

BTW, in both Crystal Disk and AS SSD benchmarks, the Samsung 850 EVO has better read scores, but the Crucial MX300 has better write scores. Without the Win 7 tweaks, here are the Crucial's numbers:

Seq: 214.00/245.40
4K: 26.98/89.85
4K-64Thrd: 27.02/91.55
I did this test a few days ago and didn't write down access time or final scores, but it seems the final was below 300.

But numbers, schnumbers. In everyday real world use, I can't tell any difference in performance between the two. Both are equally fast.

My System SpecsSystem Spec

 SSD: switching from IDE to AHCI...real world differences?

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