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Info PCIe versions! Reasons to upgrade now!

Harry_Wild

Harry_Wild

Senior member
PCIe Generations Compared
BandwidthGigatransferFrequency
PCIe 1.08 GB/s2.5 GT/s2.5 GHz
PCIe 2.016 GB/s5 GT/s5 GHz
PCIe 3.032 GB/s8 GT/s8 GHz
PCIe 4.064 GB/s16 GT/s16 GHz
PCIe 5.0128 GB/s32 GT/s32 GHz
PCIe 6.0256 GB/s64 GT/s32 GHz

Worth upgrading to a new PC in PCIe 5!

PCIe Generations Compared Bandwidth Gigatransfer Frequency PCIe 1.0 8 GB/s 2.5 GT/s 2.5 GHz PCIe 2.0 16 GB/s 5 GT/s 5 GHz PCIe 3.0 32 GB/s 8 GT/s 8 GHz PCIe 4.0 64 GB/s 16 GT/s 16 GHz PCIe 5.0 128 GB/s 32 GT/s 32 GHz PCIe 6.0 256 GB/s 64 GT/s 32 GHz If you have a PCIe 3.0 or...
forums.anandtech.com
 
mindless1 said:
Heh....... I got 99 problems but my PCIe speed ain't one of them.

PCI on the other hand, I was bottlenecked by that by the Pentium 3 era if not before.
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Well, you need all your components to be at least PCIe 4 or better to feel the rewards of PCIe 5! Otherwise, might get a bottleneck in the system! That includes RAM and it’s speed. DDR5.
 
I'm just not feeling it... am not on the cutting edge of gaming, do compute intensive things like video editing but am never in that much of a crunch. Besides if it is compute intensive, I'd farm that out to some other system rather than my new build, main use system.
 
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I think PCIe 5 has not been available on any motherboards and/CPUs as of yet? I was lead to think that PCIe 5 was going happen in the new CPUs happening now!
 
Harry_Wild said:
I think PCIe 5 has not been available on any motherboards and/CPUs as of yet? I was lead to think that PCIe 5 was going happen in the new CPUs happening now!
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PCIe v5 has been available since Alder lake platform was released & that is nearly a year ago. They have 20 lanes from the CPU only. However newer AM5 (Zen 4) cpu have 24 lanes from the CPU only. So in effect it depends how many devices you want to use that are capable of PCIe v5. There is more PCIe v5 lanes from AMDs new X670E & B650E chipset based motherboards that can be seen here
Intel at the moment do not have extra PCIe v5 lanes from their soon to be released for retail sale, Z790 platforms, that chipset is still on PCIe v4 specification.
 
Hotrod2go said:
PCIe v5 has been available since Alder lake platform was released & that is nearly a year ago. They have 20 lanes from the CPU only. However newer AM5 (Zen 4) cpu have 24 lanes from the CPU only. So in effect it depends how many devices you want to use that are capable of PCIe v5. There is more PCIe v5 lanes from AMDs new X670E & B650E chipset based motherboards that can be seen here
Intel at the moment do not have extra PCIe v5 lanes from their soon to be released for retail sale, Z790 platforms, that chipset is still on PCIe v4 specification.
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I kind remember reading this about the CPU only but did not recall until you mention it above!
 
Like all other tech, new gen’s will be seen at enterprise levels, then mid range, then x86, then trickle down to desktop laptops.

With the constraints to hardware availability, you should expect to see more delay will this delivery path

A PCIe gen 3 bus is pretty fast and nothing to cry about.

as always, my upgrades will be based in need, and what’s available when I’m ready
 
Furious_Styles said:
C'mon game companies start rolling out that direct storage, otherwise PCI-e speeds mean next to nothing for me. 🙁
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It probably doesn't make sense for them to use this tech right now. If they stream uncompressed textures, game sizes will balloon up to TBs. If they stream compressed textures, weaker CPUs are gonna croak under the load of texture decompression. They don't want their game to be remembered in the same vein as Crysis.
 
igor_kavinski said:
It probably doesn't make sense for them to use this tech right now. If they stream uncompressed textures, game sizes will balloon up to TBs. If they stream compressed textures, weaker CPUs are gonna croak under the load of texture decompression. They don't want their game to be remembered in the same vein as Crysis.
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Directstorage is doing the decompression on the GPU afaik.
 
Justinus said:
Directstorage is doing the decompression on the GPU afaik.
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Good point. Are current GPUs capable of doing that? Nvidia didn't talk about it in their 4000 series announcement so I'm thinking maybe not. AMD should have it in RX 7000 series, since they helped create the decompression tech for PS5.
 
igor_kavinski said:
Good point. Are current GPUs capable of doing that? Nvidia didn't talk about it in their 4000 series announcement so I'm thinking maybe not. AMD should have it in RX 7000 series, since they helped create the decompression tech for PS5.
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Both Ampere and RDNA2 announced support for Directstorage at launch. Nvidia branded it RTX IO and then never really talked about it again.
 
https://www.anandtech.com/show/1755...hipset-for-ryzen-7000-pcie-5-0-for-mainstream

“AMD has announced a fourth chipset for Ryzen 7000, the B650E chipset. The B650E chipset will run alongside the already announced B650 chipset, but as it's part of AMD's 'Extreme' series of chipsets, it will benefit from PCIe 5.0 lanes to at least one M.2 slot, as well as optional support for PCIe 5.0 to a PCIe graphics slot, features not available with standard B650 boards.”

I might have to go to the Extreme and go with the B650E? Change to 7700X?

PCIe 5 to both M.2 and GPU as well as CPU! 😛 Now, that is extreme!

BandwidthGigatransferFrequency

PCIe 4.064 GB/s16 GT/s16 GHz
PCIe 5.0128 GB/s32 GT/s32 GHz
 
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What is the alure of direct storage on desktop pcs when you have lots of ram that's a much faster cache than the pcie interface on relatively glacial flash on an ssd?
It feels like a tech/design decision to work around the weaknesses of consoles with a small shared memory pool and is being used as a marketing hook to sell pcie5 ssds.
 
tomatosummit said:
What is the alure of direct storage on desktop pcs when you have lots of ram that's a much faster cache than the pcie interface on relatively glacial flash on an ssd?
It feels like a tech/design decision to work around the weaknesses of consoles with a small shared memory pool and is being used as a marketing hook to sell pcie5 ssds.
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Speed sells! Look at all the high hp luxury cars! Instantaneous is sexy!
 
tomatosummit said:
What is the alure of direct storage on desktop pcs when you have lots of ram that's a much faster cache than the pcie interface on relatively glacial flash on an ssd?
It feels like a tech/design decision to work around the weaknesses of consoles with a small shared memory pool and is being used as a marketing hook to sell pcie5 ssds.
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Direct storage takes advantage of NVME queues to improve loading of many smaller files. Currently direct storage operates similar to the old system of loading assets - compressed assets are loaded into system RAM and decompressed by the CPU then sent to VRAM. With GPU decompression the assets will still be moved into system RAM but then they'll be sent to VRAM to be decompressed by the GPU rather than the CPU, with the CPU only handling the IO requests.

The primary benefit is vastly reducing or even eliminating load times, and with Xbox Series consoles having NVME storage and PS5 having NVME-like storage they're no longer the lowest common denominator. Stubborn potato-PC gamers are now the development bottleneck. I have noticed some devs starting to require SSDs, though I haven't seen any yet requiring and NVME SSD. I don't know how much that can actually help though given that NVME queues are still insanely larger than SATA queues. The queue is the important part, and the PCIE version not immediately as important. There's also the implication of changing game world design through the elimination of loading points, so no more sectioning or instancing of different parts of a game world.
 
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