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Best hard drive configuration for a photoshop rendering machine - Page 2

post #11 of 14
Quote:
Originally Posted by StormX2 View Post

from what I understood, with plenty of ram, a scratch disk is less necessary?

In theory yes. In practice no.

The whole point of a scratch disk / swap file/ paging file is to give you more fake memory when you run out of real memory. So yeah, taking a chunk of your real memory and converting it to fake memory shouldn't really do much good. You still have the same total memory, now your system just has the overhead of swapping between virtual and real memory.

The catch however is that a lot of programs simply suck at handling memory. A lot of Adobe software for example will actually put stuff in the scratch disk before the memory is even half utilized. The idea is "this is a less important file, so lets put it in the scratch disk ahead of time so we don't have to stop and move a bunch of unimportant files to it later in the middle of something".

It made sense when no one on earth had more than 512MB of ram, but doesn't really make much sense today where a workstation can easily be running 32GB. By giving it a faster scratch disk, you make those little slowdowns vanish (as long as you really don't need more memory than you actually have).


Another point that should be made is that not all RAMdisks are created from system RAM. There are PCIe cards with DIMM slots designed for the sole purpase of creating a RAMdisk that does not draw from system memory. By using this method, you gain the advantage of a RAM scratchdisk without the loss of your system RAM. Best of both worlds if you're willing to pay the price premium.

Otherwise, a SSD is the next step down (but will save you money and allow for a significantly larger scratch disk if you really need it).
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post #12 of 14
Quote:
Originally Posted by Zero4549 View Post

Another point that should be made is that not all RAMdisks are created from system RAM. There are PCIe cards with DIMM slots designed for the sole purpase of creating a RAMdisk that does not draw from system memory. By using this method, you gain the advantage of a RAM scratchdisk without the loss of your system RAM. Best of both worlds if you're willing to pay the price premium.

Curious, what hardware RAMDisk cards are available now (in particular, those supporting DDR3). I've got one of those Gigabyte I-RAMs but that only supports DDR and maxes out at 4GiB.
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post #13 of 14
Quote:
Originally Posted by rui-no-onna View Post

Quote:
Originally Posted by Zero4549 View Post

Another point that should be made is that not all RAMdisks are created from system RAM. There are PCIe cards with DIMM slots designed for the sole purpase of creating a RAMdisk that does not draw from system memory. By using this method, you gain the advantage of a RAM scratchdisk without the loss of your system RAM. Best of both worlds if you're willing to pay the price premium.

Curious, what hardware RAMDisk cards are available now (in particular, those supporting DDR3). I've got one of those Gigabyte I-RAMs but that only supports DDR and maxes out at 4GiB.
This is DDR2: http://www.acard.com/english/fb0101.jsp?type1_title=SATA%20RAM%20Disk%20&ino=28

I haven't seen any DDR 3 ones yet, if they are to even be released. frown.gif
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post #14 of 14
Quote:
Originally Posted by Sean Webster View Post

This is DDR2: http://www.acard.com/english/fb0101.jsp?type1_title=SATA%20RAM%20Disk%20&ino=28

I haven't seen any DDR 3 ones yet, if they are to even be released. frown.gif

ANS-9010 (2x SATA II ports, $unk)
  • Data transfer rate up to 400MB/sec
  • IOPS 20,000 per SATA port


ANS-9010BA (1x SATA II port, $339)
  • Data transfer rate up to 200MB/sec
  • IOPS 20,000 per SATA port


20,000 IOPS seems too low to justify the cost for the ANS-9010BA plus DDR2 RAM. You can get IOPS higher than that from a single SATA3 SSD.
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KeyboardCaseMouse
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Core i7-860 Gigabyte GA-H55N-USB3 EVGA GTX 460 1GB GDDR5 Kingston 2x4GB DDR3 1333 
Hard DriveOSPowerCase
G.SKILL Phoenix Pro 120GB Windows 7 Ultimate x64 Silverstone ST45SF 450W Silverstone Sugo SG05B 
CPUMotherboardGraphicsRAM
Core i7-860 Biostar TH55B HD MSI GT 240 1GB GDDR5 Kingston 2x2GB DDR3 1333 
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