PCIe 4.0

[john3850]

When ryzen 3000 releases with PCIe 4.0 will NVMe run the same speed with half or 2 pci-e lanes as it does now with 4 lanes yes or no.

 

[Billy Tallis]

You would need a PCIe 4.0 SSD to see any benefit from the PCIe 4.0 capability on the upcoming Zen 2 processors. The first PCIe 4.0 consumer SSDs should be out before the end of the year. For smaller capacities (probably 512GB and below), there should be little or no speed loss by running them with gen4 x2 links (equivalent to gen3 x4), while 1TB and especially 2TB drives will actually be able to use the extra bandwidth beyond gen4x2/gen3x4.

 

[john3850]

You would need a PCIe 4.0 SSD to see any benefit from the PCIe 4.0 capability on the upcoming Zen 2 processors. The first PCIe 4.0 consumer SSDs should be out before the end of the year. For smaller capacities (probably 512GB and below), there should be little or no speed loss by running them with gen4 x2 links (equivalent to gen3 x4), while 1TB and especially 2TB drives will actually be able to use the extra bandwidth beyond gen4x2/gen3x4.

Thanks Billy Tallis

 

[biostud]

You need this

https://www.anandtech.com/show/14416/corsair-announces-mp600-nvme-ssd-with-pcie-40

 

[Billy Tallis]

So far, Corsair, Gigabyte and Galax have announced PCIe 4.0 SSDs. I expect about a dozen more over the next few months. So far, it looks like they'll all be using the same Phison E16 controller, but there may be variation in what NAND they use (Toshiba vs Micron, and I'm not sure yet if any will use 64-layer TLC rather than 96-layer).

EDIT:
The list of brands with E16 SSDs is we've encountered at Computex is now:
Corsair
GIGABYTE
Patriot
Essencore
Galax

Essencore is a brand owned by SK Hynix, so that might mean we get to compare NAND from three different manufacturers with the same SSD controller.

 

[john3850]

You need this

https://www.anandtech.com/show/14416/corsair-announces-mp600-nvme-ssd-with-pcie-40

The MP600 will be capable of up to 4950MB/s for sequential reads and 4250MB/s for sequential writes how sweet that is next we need some good motherboard support.
Doing a simple image backup from a HP EX950 NVMe to a spindle my NVMe hit 130F degrees just reading now with pci_e 4 and 4950MB/s that temp will will start to get a little toasty.

 

[gdansk]

130F? That's 54C. Not an issue at all.

 

[killster1]

You need this

https://www.anandtech.com/show/14416/corsair-announces-mp600-nvme-ssd-with-pcie-40

damn that looks nice and perfect, ill take 2. why worry about the temp when its ahuge heatsink.

 

[phillyman36]

I have a question as far as the new pcie4 drives looking at these 2 benchmarks
https://hexus.net/tech/news/storage...s-nvme-gen4-ssd-launched-copper-fin-heatsink/

https://www.guru3d.com/articles-pages/samsung-970-pro-m-2-512gb-nvme-ssd-review,15.html

The seq speeds are faster but what about the other benches? There is some increase in speed but not as much as the seq. Are these new pcie4 nvme drives going to open apps faster, load game noticeably quicker? What usage cases benefit from the new drives?

 

[deustroop]

Back of the envelope here but
Looks like a %70 increase in r/w performance ?
You should notice, e.g., if a winrar compression time is reduced from 100 min to 30.

 

[IntelUser2000]

The seq speeds are faster but what about the other benches? There is some increase in speed but not as much as the seq. Are these new pcie4 nvme drives going to open apps faster, load game noticeably quicker? What usage cases benefit from the new drives?

I'm having a feeling most of these drives are getting speed increases due to the fact that realistically, PCIe 3.0 x4 limits sequential throughput to 3.5GB/s. So the boost is not from any significant changes in design, but simply the doubled maximum throughput allowing the SSD to fully stretch its legs.

There's simply no way without a radical change to the whole PC system we'll get any meaningful speed increases with these drives. The high numbers are just there for marketing purposes. An SATA II drive with 250MB/s throughput will be minimally slower than a 5GB/s PCIe 4.0 x4 SSD in practice.

Looks like a %70 increase in r/w performance ?
You should notice, e.g., if a winrar compression time is reduced from 100 min to 30.

70% increase = 41.2% decrease. 100 min to 30 min is 2.33x increase.

 

[KentState]

I have a question as far as the new pcie4 drives looking at these 2 benchmarks
https://hexus.net/tech/news/storage...s-nvme-gen4-ssd-launched-copper-fin-heatsink/

https://www.guru3d.com/articles-pages/samsung-970-pro-m-2-512gb-nvme-ssd-review,15.html

The seq speeds are faster but what about the other benches? There is some increase in speed but not as much as the seq. Are these new pcie4 nvme drives going to open apps faster, load game noticeably quicker? What usage cases benefit from the new drives?

IMO, PCIE 4.0 is not going to be impactful for awhile. For day-to-day use, you will not see anything move faster as not much pushes the current NVMe drives, especially with gaming.

 

[cbn]

IMO, PCIE 4.0 is not going to be impactful for awhile. For day-to-day use, you will not see anything move faster as not much pushes the current NVMe drives, especially with gaming.

Yes, gaming at the moment does not benefit from extra bandwidth (faster 4K QD1 Read yes....but not extra bandwidth).

I'm guessing it will take a while for extra bandwidth to matter in gaming (probably first PC games to benefit will be PS5 ports).

https://gadgets.ndtv.com/games/news...n-off-in-leaked-spider-man-demo-video-2041298

In the leaked video, shared by Wall Street Journal writer Takashi Mochizuki on Twitter, Sony also demonstrates Spider-Man zipping through New York City. While the game sometimes pauses on the PlayStation 4 Pro, waiting for the environment to be generated around him, the same scene renders flawlessly and continuously on the "next-generation" hardware. This shows how SSDs are much better suited to dealing with high-bandwidth data transfers.

 

[beginner99]

What usage cases benefit from the new drives?

One that generates a lot of sequential data fast, eg. none we consumers need to worry about.

For conusmer experience intel optane is probably the better choice as it has a lot better random read/write at low QD compared to these NAND ssds that reach peak numbers only under QD never actually present on a consumer PC. The big jump was HDD->sata SSD mostly due to latency and from ssd to ssd it's really already hard to notice in daily usage. I mean I have a crucial mx200 in my PC (and it's an old one so sata-2 no joke) and I doubt I would notice much of a jump to one of these pcie4 card. Doesn't mean I'm not buying one but leaning towards optane.