Show us your SSD performance 2

[Mellon Head]

Thanks Steve for the answer. I did not know that.

Yes, thank you. I didn't know that either.

@ A Guy:

I feel better now. Thanks.

 

[essenbe]

You're quite welcome.

 

[Trevor Dennis]

I only came back to the forum to get help with a keyboard problem, but I'll play this game while I am here. Two Samsung 256Gb Pro in raid0 for OS. Attached to SATA ports 0/1 on X79-UD5 with Intel Enterprise Driver. I have seen someone who got just over the 1Gb/s with this setup. I couldn't quite manage that, but what really impresses me is the 4K performance.

 

[JerometheGiraff]

I just bought an Samsung EVO 120, I didn't install the software yet. I was going to buy a Samsung Pro but in my opinion the numbers between the two are almost identical, plus I saved $50 so I spent it on other PC hardware

 

[Trevor Dennis]

I just bought an Samsung EVO 120, I didn't install the software yet. I was going to buy a Samsung Pro but in my opinion the numbers between the two are almost identical, plus I saved $50 so I spent it on other PC hardware

I had got as far as ordering a pair of 250Gb EVO when I discovered that they don't work well in any raid configuration. In Fact Samsung specifically advise against raiding EVO drives. So I had a mad rush getting on to the supplier and changing the order to a pair of Pros.

I get all my hardware advice from the Adobe Premiere Pro Hardware forum, as they really know their stuff there. They didn't like that I wanted to put my OS on a raid0, but I do a lot more Photoshop than Premier Pro, so I went ahead anyway. This is the thread, and there is a link to another relevant thread

Adobe Community: How To Install OS on Raid0?

 

[whs]

I think Peru Bob on the Adobe forum is right. Raid will not buy any significant performance advantage. The access time for Raid is the same as for a single unit and the OS performance is driven by the access time.

 

[kbrady1979]

I think Peru Bob on the Adobe forum is right. Raid will not buy any significant performance advantage. The access time for Raid is the same as for a single unit and the OS performance is driven by the access time.

This is completely true. The only numbers of any importance to anyone using a single SSD or SSD + HDD setup are the Random 4K's(not 4K QD32/64) and access times. RAID 0 affects neither of them. Sequential read/writes will become important when you have multiple, large capacity SSD's and you transfer files between them. As of now, anyone using an SSD/HDD setup are limited to the speed of the HDD which is on average 100-150 MB/s versus 500-500 MB/s for an SSD.

 

[Britton30]

Hi Kelly, long time no see.

I think Steve was going to RAID two SSDs to see what happens.

 

[kbrady1979]

Hey Gary! Feels good to be active around here again. IF there are any measurable differences, the risks of RAID 0(to me) aren't worth it. I still don't think it will improve boot time, load time, or anything important. It will almost double your Sequential Read/Write speeds(which most of us can't take advantage of), and it will pump your Random 4K QD 32/64 up quite a bit. Most of us generally operate in the range of QD 1-7 or 8, so QD's of 32 or 64 don't mean much.

 

[essenbe]

Kelly, I have done it in the past, just to see how it works, plus the fact I have always advised against it for the reasons you mentioned, but like to see for myself before advising anyone. It did not help and what you said is absolutely correct. I have, as Gary said, thought seriously about doing it again. The only advantage of Raid 0 is the increased space from combining 2 SSDs. Speed is not affected at all nor is access times. usable space is improved. That is the only advantage if you can live with the risks, which I can due to the fact I am a backup freak. I'm not concerned about losing anything. We are happy you are around more, you add much to these forums.

 

[ZaLiTH]

So, I discovered I had a misaligned partition on my new M500 and that my drive controller had reverted to IDE mode. Switched to AHCI, aligned partition to the 2048 sector (1024k), and suddenly I'm getting much better speeds on startup and app launches.

I am slightly concerned about something though, if you see the three pics I've attached to this post:

HDTune - 1: first run, before alignment or AHCI
HDTune - 2: second run, before alignment, with AHCI
HDTune - 3: third run, after alignment, with AHCI (at the same time as the AS SSD score above)

Why would the graphs in HDTune all have that odd shape with the drops in speed...? All the test shots I've seen in other posts and tech reviews have had a smooth graph. Is this something I should be worried about?

edit: Off topic, but why aren't attachments shown as thumbnails anymore?

 

[JerometheGiraff]

I was having a problem whereas my computer would continue to run, but the monitor would shut off and windows would stop working. What was happening in the BIOS the boot order was being rearranged. I bought a new SSD drive a week ago, put it in so far so good up until today, the problem resurfaced.

Before putting in the new SSD the problem would surface frequently, this is the first time in almost a week with the new SSD that the problem resurfaced. I replaced some connectors, I'm at a loss what is causing this.

 

[whs]

I was having a problem whereas my computer would continue to run, but the monitor would shut off and windows would stop working. What was happening in the BIOS the boot order was being rearranged. I bought a new SSD drive a week ago, put it in so far so good up until today, the problem resurfaced.

Before putting in the new SSD the problem would surface frequently, this is the first time in almost a week with the new SSD that the problem resurfaced. I replaced some connectors, I'm at a loss what is causing this.

This is not a good thread to get attention to your problem. I suggest you start a new thread for it.

 

[Fantail]

840 Evo for the Laptop (Asus k53e w/i5)
I did a fresh install of 7 not a clone from the 5400.

 

[Britton30]

The widely varying read/write traces may me due to the program crunching through compressed and non-compressed data.

 

[Fantail]

Yeah I was kind of wondering about that, expecting more of a straight line. I thought it might have something to do with the magician performance / os settings. Maybe I'll tweek some options but I'm not so sure its a good idea to keep changing them.

 

[ZaLiTH]

840 Evo for the Laptop (Asus k53e w/i5)
I did a fresh install of 7 not a clone from the 5400.

Is the partition perhaps just misaligned? Had a similar story when I got my M500 installed, switching back to AHCI SATA mode and aligning the partition to 1024k sorted it out beautifully.

 

[Boozad]

Intel 520 series.

 

[ZaLiTH]

Intel 520 series.

Those are some real nice scores there... Completely thrashes the write speeds of my M500.

 

[paulpicks21]

Here is my aging OCZ Vertex 4, I really need a bigger drive. It's on my upgrade list.