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Crystal Disk Info confusion

post #1 of 5
Thread Starter 
I got my Crucial M4 a while ago and about 6 months later a WD caviar black. They've been performing flawlessly since day one. I also installed and looked at crystal disk info when I got them. Both drives are listed as in good with the M4 having a percentage rating of 99%. But the items it lists on both drives all have a value of 100 with the worst value at 100, excluding a few that go above 100. The point is that they have the same current value as the worst value it lists. Anyone know what's up with that? Or am I reading it wrong?

Example if I didn't explain it correctly-

attribute name Current Worst
Raw Read Error Rate 100 100
Phantom
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Phantom
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post #2 of 5
I't always lists it like that your fine mine does the same thing wink.gif
Dreamland
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Dreamland
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post #3 of 5
Thread Starter 
Yea that's strange, I know it was either like that or it's something wrong with the program. Because my drives are in top condition.
Phantom
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Phantom
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Hard DriveOptical DriveCoolingOS
Crucial M-4 256GB ASUS DRW Cooler Master Hyper 212 Evo+ Win 7 Home 
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ViewSonic VX2453mh-LED 23.6"  Razer BlackWidow NZXT Hale90 850W NZXT Phantom Black w/ Orange Trim 
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post #4 of 5
Worst is not telling you what the worst possible value for an attribute is, but the worst value that has been seen for an attribute, if worst can even apply to the attribute. What is the "worst" total power on hours? Or the worst power cycle counts?

Think of it like this: Say you have an attribute we'll call Health, and the Current Value is 100%. A value called Worst keeps track of the... worst value of an attribute. The drive never had a Health value of less than 100%. So the "Worst" value the Health attribute has is 100%. This attribute will always have current and worst being identical.

Another attribute is say Correctable Errors (which is a real thing), whose Current Value gets reset on every cold start. You check the Current Value and it is 0, but you see that the Worst value is 10. At some time in the past, several correctable errors were counted and that count was stored.

You could have the Temperature attribute, and if a high temperature is considered bad, the highest temperature that was saved would be displayed in the Worst field.

So Worst may apply to an attribute or not. They really should display NA in the worst column for some attributes.
post #5 of 5
Thread Starter 
Ahhhh, ok I got it. Thanks.
Phantom
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CPUMotherboardGraphicsRAM
i- 2500k @ 4.5Ghz ASUS P8Z68-V Pro/Gen3 MSI Gaming 4G GTX 980 G.SKILL Ripjaws X Series 8GB 2x4 
Hard DriveOptical DriveCoolingOS
Crucial M-4 256GB ASUS DRW Cooler Master Hyper 212 Evo+ Win 7 Home 
MonitorKeyboardPowerCase
ViewSonic VX2453mh-LED 23.6"  Razer BlackWidow NZXT Hale90 850W NZXT Phantom Black w/ Orange Trim 
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Logitech G400 Steelseries S&S Creative Titanium HD 
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Phantom
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CPUMotherboardGraphicsRAM
i- 2500k @ 4.5Ghz ASUS P8Z68-V Pro/Gen3 MSI Gaming 4G GTX 980 G.SKILL Ripjaws X Series 8GB 2x4 
Hard DriveOptical DriveCoolingOS
Crucial M-4 256GB ASUS DRW Cooler Master Hyper 212 Evo+ Win 7 Home 
MonitorKeyboardPowerCase
ViewSonic VX2453mh-LED 23.6"  Razer BlackWidow NZXT Hale90 850W NZXT Phantom Black w/ Orange Trim 
MouseMouse PadAudio
Logitech G400 Steelseries S&S Creative Titanium HD 
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