RAID Testing (VROC and RST)
For this review, I tested a set of four 118GB 800P's and compared them to a set of four 960 PRO 512GB parts (we didn't have four 960 EVO 250's). Arrays of 2-4 drives were tested on X299 VROC, while a pair were tested on Z270 (but we have enough knowledge of RST's performance to make educated guesses at 3-drive performance).
Sequential:
For sequential maximum throughput, we get an expected linear progression with the VROC configuration, while RST tapers off to a max throughput at ~3.5GB/s, limited by DMI 3.0.
Random:
Random performance ramps up similarly for all groups tested, with only the single 118GB running out of steam and leveling off early. Overall we can see that even though the 800P in a RAID configuration starts at a lower IOPS value, it still far exceeds that of the 960 PRO.
This chart is a segment of the data from the previous one. Focusing on QD1 and plotting additional SSDs across the axis (similar to the top chart on this page, but for IOPS instead of sequential throughput). Note that random performance does not scale higher when drives are added to the array because we are measuring at QD1 here. Can't scale higher when only a single request is coming in at a time.
Random (latency):
Latency figures are about what we would expect. Note that even with a single 118GB 800P, we come nowhere near that oddball 6.75us rating we saw in the specs earlier. The realistic latency figures for the 800P fall in the high 11's. X299 VROC arrays adds ~5us per IO, while Z270 RST arrays add ~2.5us per IO.
OK so with all that data…is
OK so with all that data…is it faster than a 960 evo for everyday windows use? and does it use more or less power for a laptop?
Likely less power in laptop
Likely less power in laptop usage as it spends less time servicing IOs on average, but the 'feel' will likely be similar unless you are doing some heavy mixed/random read workloads.
Any idea why Intel chose the
Any idea why Intel chose the PCI-E 3.0 x2 interface? All M.2 slot that support this drive are x4 capable. Seems like they are leaving performance on the table….
On a related note, correct me if I’m wrong, but most Z370 motherboards have 20 PCI-E lanes available without going through the chipset’s 4 additional lanes. Usually they are assigning 16 lanes to the graphics card and 4 lanes to an M.2 slot. Additional M.2 slots are running through the chipset’s lanes. Are existing motherboards capable of assigning 2 CPU lanes to 2 different M.2 slots?
They likely went with x2
They likely went with x2 since they already had hardware/controller close to that ready to go (via Optane Memory parts).
Current X299 boards / VMDs can only bifurcate in x4 chunks, but someone can probably make a PCIe switch that can split further.
Re: ASUS Sabertooth
Re: ASUS Sabertooth X99
Allyn,
Would it make any sense to evaluate these Optane parts on an AMD Threadripper system?
My best guess is that your X99 test system was capable of driving both the M.2 and x16 slots at max speed, so an AMD motherboard should not make much of a difference.
Again, thanks for your consistently excellent reviews!
p.s. Did you ever solve the problems you encountered with your Threadripper system?
In short, it wouldn’t, not if
In short, it wouldn't, not if I wanted the lowest and most consistent latencies.
I've been sticking with the X99 platform because 1. If it ain't broke… and 2. I'd rather not re-test 100+ SSDs, not until I've added some workloads to the suite at least.
Re: problems on TR – the problems are still an issue, and are still preventing me from getting results consistent enough to feel comfortable publishing.
Copy that and … THANKS
Copy that and … THANKS AGAIN!
Re:
https://www.pcper.com/ima
Re:
https://www.pcper.com/image/view/89768?return=node%2F69337
To clarify, I am still curious if the latter AIC will be bootable when installed in an AMD Threadripper motherboard.
For prosumers and workstation users who now prefer a TR system, this AIC with 4 x Optanes could work.
Nevertheless, you are correct: 4 x Samsung 960 Pro make more sense in such an AIC, for reasons you have already explained in your other reviews.
Yes, it’s bootable since the
Yes, it's bootable since the UEFI initializes the array each boot. Consistent performance? that's another story entirely.
Apples-to-apples, perhaps we
Apples-to-apples, perhaps we should wait for M.2 Optanes to be enhanced with support for x4 PCIe lanes each.
Also, there is the 16 GHz clock rate approved for PCIe 4.0:
Intel may be “vectoring” x2 PCIe lanes to a future date
when x2 @ 16G = x4 @ 8G .
https://www.anandtech.com/show/11967/pcisig-finalizes-and-releasees-pcie-40-spec
PCIe 4.0 is gopping to be
PCIe 4.0 is gopping to be power hungry at least initially. Don't be surprised to see SSDs hang out at 3.0 for a good while after 4.0 is available and shipping on motherboards.
So I just want to make sure I
So I just want to make sure I can use this….I have an Asus Z370E, 8700K, one 1080Ti….with 4 hard drives (3 standard- 2@7200RPM, one 5400RPM) and one SSD boot drive from Crucial. Also, External backup HD from western digital. Will I have any issues if I decide to purchase this?
From what I been told the
From what I been told the Intel Optane SSD 800P has to be boot drive.
It doesn’t *have* to be a
It doesn't *have* to be a boot drive. Can be used as a fast random access temp drive, etc. All depends on where you want the traits of this particular SSD.
*edit* you may be thinking of Optane Memory (caching), which will only cache the boot drive. 800P can be used this way, by installing the Optane Memory driver, but it's overkill with >32GB of cache.
The Z370E has a pair of M.2
The Z370E has a pair of M.2 slots, so even if your Crucial SSD is M.2, you should have room. You could put the 800P in the primary M.2 slot to use for boot and shift any other (larger) M.2 SSD to the second M.2 / other SATA port (depending on what it is) for use as a game / other SSD.
Interesting graph:
history
Interesting graph:
history of PCIe actual bandwidth
compared to
every 3 years, I/O bandwidth doubles:
https://images.anandtech.com/doci/11967/pci-sig_history_graphic_wide_rgb_0533_575px.jpg
Allyn, On behalf of all
Allyn, On behalf of all pcper.com users,
please accept our sincere appreciation
for your very prompt and professional
answers to all our questions.
I just got great deal on a i7
I just got great deal on a i7 7800x and a Gigabyte Aorus Gaming Ultimate,
can I use say a 960 Pro 1 Tb as boot then the 2 118gb optane as a raid cache.
I won’t be using high end gpu this will be a sever build with alot of Hdds?
Any news on Micron’s QuantX ?
Any news on Micron’s QuantX ?
From their earnings call I
From their earnings call I don’t think we’ll see it until 2019
Pretty sure that was just
Pretty sure that was just vaporware to force intel to release hypetane asap. as there has been zero products from micron with there brand of xpoint.
i was excited to see the dimms they were working on it all looked so good on paper but sadly that will most likely be a pipe dream that will never bear fruit.
you got about as much chance as valve releasing HL3 then micron actually make a product with xpoint at this point.
Hi Allyn, i’m just curious about “Intel’s recommended client SSD conditioning pass”,could you tell me where can i find those recommendation?
I reviewed and nothing there.
Allyn’s not here man … he’s writing those things now!
I think this is the paper he was referring to https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/ssd-server-storage-applications-paper.pdf
Thank you Jeremy!
I think i misunderstood his thoughts, and now i’m clear that leaving 8GB portion for random access is a better way to simulate real-world condition.