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Intel 9-series Chipset Could Feature SATA Express Interface

btarunr

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#2
"it manages to retain backwards compatibility with older SATA standards (at reduced performance, of course)"

Why at reduced performance? Isn't it, in this case, just a SATA controller connected via PCI-E?
 

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#3
"it manages to retain backwards compatibility with older SATA standards (at reduced performance, of course)"

Why at reduced performance? Isn't it, in this case, just a SATA controller connected via PCI-E?
What I meant was, plugging a SATA Express drive to an older interface could be possible at reduced performance, just like SATA 6G SSDs are bottlenecked by SATA 3G.
 
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#4
What I meant was, plugging a SATA Express drive to an older interface could be possible at reduced performance, just like SATA 6G SSDs are bottlenecked by SATA 3G.
Oh I see - sorry, I got you the wrong way round.
 
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#5
Hurry up already

That's precisely the bottleneck that needs the most work. CPU - RAM - SSD relative speeds are analogous to FLYING-DRIVING-WALKING; you spend most of your time waiting for the SSD to catch up, or if using HDD, the analogy would be to CRAWLING on your belly. In 2013, CPU and RAM speeds are already so fast, only benchmarks can tell the difference. So the only upgrade that will be noticeable "in the seat of your pants" would be to the SATA interface and subsequent drive improvements. Too bad we have to wait at least another year+, while CPUs and RAM will get faster for no reason we can use now.
For those of us on Ivy, that's yet another reason to sit tight through Haswell and wait for better things.
 
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#6
That's precisely the bottleneck that needs the most work. CPU - RAM - SSD relative speeds are analogous to FLYING-DRIVING-WALKING; you spend most of your time waiting for the SSD to catch up, or if using HDD, the analogy would be to CRAWLING on your belly. In 2013, CPU and RAM speeds are already so fast, only benchmarks can tell the difference. So the only upgrade that will be noticeable "in the seat of your pants" would be to the SATA interface and subsequent drive improvements. Too bad we have to wait at least another year+, while CPUs and RAM will get faster for no reason we can use now.
For those of us on Ivy, that's yet another reason to sit tight through Haswell and wait for better things.
Depends what you're doing. If you're booting windows or playing games on a fast SATA3 SSD, it's likely that you're waiting for the CPU more than anything else imo.

Also, current SSDs come nowhere near saturating SATA3 on small, random reads and writes.
 
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#7
How many drives are they running where the SATA ports become a bottleneck? You'd need like 6 (really good) SSDs in a RAID 0 setup before this would offer any benefit.
 
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#8
I wonder when hit a point where drive speeds are fast enough where they too are inconceivable besides in benchmarks. Or will files just get larger.
 
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#9
How many drives are they running where the SATA ports become a bottleneck?
A single high-end SSD is bottlenecked by SATA 6Gb/s in large sequential transfers.

You'd need like 6 (really good) SSDs in a RAID 0 setup before this would offer any benefit.
6 SSDs in RAID 0 all communicate with the controller through different ports, so they'd only be bottlenecked if a single one of those drives would also be bottlenecked, unless there is a bandwidth limitation between the controller and the rest of the system.
 
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#10
Depends what you're doing. If you're booting windows or playing games on a fast SATA3 SSD, it's likely that you're waiting for the CPU more than anything else imo.
More like the GPU...;)
 
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#11
More like the GPU...;)
The GPU or CPU will probably be the limiting factor on framerates, but not on waiting times (which is what I said). Upgrading your GPU can improve loading times, but it's nowhere near as big a deal as CPU or storage.
 
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#12
Also, current SSDs come nowhere near saturating SATA3 on small, random reads and writes.
But does on larger files.... really anything from 64k and up on a OCZ Vector is 550+MB...As time goes on and the pipe gets bigger with this technology you bet the 4k files that are so important will be going up as well. Hell, they are already damn close if not saturating SATA2 (overhead included in statements above, note).
 
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#13
But does on larger files.... really anything from 64k and up on a OCZ Vector is 550+MB...As time goes on and the pipe gets bigger with this technology you bet the 4k files that are so important will be going up as well. Hell, they are already damn close if not saturating SATA2 (overhead included in statements above, note).
Very true. I'd be very interested to see a breakdown of what constitutes different loads. Despite what all the synthetic tests might lead one to believe, most of us very rarely see a perceivable delay on modern PCs outside of game loading times. Are they bottlenecked by SATA3, the SSD, the CPU, or RAM bandwidth?
 
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#14
Oh, SATA speeds are measured in gigabits, aren't they? Okay, I goofed on that one.
 
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#15
Oh, SATA speeds are measured in gigabits, aren't they? Okay, I goofed on that one.
Well your post implied that multiple SSDs in RAID are subject to the bandwidth constraints of one SATA port, rather than the total bandwidth constraints of multiple SATA ports.
 
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#16
Well your post implied that multiple SSDs in RAID are subject to the bandwidth constraints of one SATA port, rather than the total bandwidth constraints of multiple SATA ports.
THIS... and three would have done it (2 are there really)... that guy was 0-2. :p
 
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#17
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#18
Nothing.. that was half of another thought I think.. haha
 
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#19
This excerpt from benchmarkreviews says it all;

Solid State vs Hard Disk

Despite decades of design improvements, the hard disk drive (HDD) is still the slowest component of any personal computer system. Consider that modern desktop processors have a 1 ns response time (nanosecond = one billionth of one second), while system memory responds between 30-90 ns. Traditional hard drive technology utilizes magnetic spinning media, and even the fastest spinning mechanical storage products still exhibit a 9,000,000 ns / 9 ms initial response time (millisecond = one thousandth of one second). In more relevant terms, the processor receives the command and must then wait for system memory to fetch related data from the storage drive. This is why any computer system is only as fast as the slowest component in the data chain; usually the hard drive.

In a perfect world all of the components operate at the same speed. Until that day comes, the real-world goal for achieving optimal performance is for system memory to operate as quickly as the central processor and then for the storage drive to operate as fast as memory. With present-day technology this is an impossible task, so enthusiasts try to close the speed gaps between components as much as possible. Although system memory is up to 90x (9000%) slower than most processors, consider then that the hard drive is an added 1000x (100,000%) slower than that same memory. Essentially, these three components are as different in speed as walking is to driving and flying.

Solid State Drive technology bridges the largest gap in these response times. The difference a SSD makes to operational response times and program speeds is dramatic, and takes the storage drive from a slow 'walking' speed to a much faster 'driving' speed. Solid State Drive technology improves initial response times by more than 450x (45,000%) for applications and Operating System software, when compared to their mechanical HDD counterparts. The biggest mistake PC hardware enthusiasts make with regard to SSD technology is grading them based on bandwidth speed. File transfer speeds are important, but only so long as the operational I/O performance can sustain that bandwidth under load.

Bandwidth Speed vs Operational Performance

As we've explained in our SSD Benchmark Tests: SATA IDE vs AHCI Mode guide, Solid State Drive performance revolves around two dynamics: bandwidth speed (MB/s) and operational performance I/O per second (IOPS). These two metrics work together, but one is more important than the other. Consider this analogy: bandwidth determines how much cargo a ship can transport in one voyage, and operational IOPS performance is how fast the ship moves. By understanding this and applying it to SSD storage, there is a clear importance set on each variable depending on the task at hand.

For casual users, especially those with laptop or desktop computers that have been upgraded to use an SSD, the naturally quick response time is enough to automatically improve the user experience. Bandwidth speed is important, but only to the extent that operational performance meets the minimum needs of the system. If an SSD has a very high bandwidth speed but a low operational performance, it will take longer to load applications and boot the computer into Windows than if the SSD offered a higher IOPS performance.

http://benchmarkreviews.com/index.php?option=com_content&task=view&id=1070&Itemid=60
 
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#20
Says all of what? Nobody has contradicted anything that copy/paste said... in fact, its quite common knowledge, what you posted...

Thanks?! :)
 
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#21
A transitional standard for the masses. Luckily we, the well-informed and hung users of TPU, won't have to wait for Q2 2014. With native PCIe flash controllers already being demonstrated it won't be that long til we'll see PCIe and NGFF SSD using them.
 

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#22
Hard drives might be relatively slow but they're the cheapest mass storage media you can get. Find me some other storage media that is 1TB in size and that performs at least just as well and still costs only 100 USD.

It's just the memory hierarchy and SSDs got put somewhere between DRAM and HDDs. The closer you move it to the CPU, the faster it will be. It will also cost more to produce for any given size. So hard drives exist to store a lot of data, not to be fast. That's what they're good at, like how RAM is good at holding active applications and how cache is good at holding recently used data.
 
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#23
SATA express makes SATA port multipliers a bit more sensible :)