Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Computer recognizes 8GB of ram, but only uses 30% of it?

19 Mar 2011   #11
3D Jed

Windows 7 pro x64 SP1

some apps eg After Effects, Prem Pro, Cinema 4D will eat all the RAM you can throw at them.

snip here taken during a C4D render

Attached Images
Computer recognizes 8GB of ram, but only uses 30% of it?-c4d_ram.jpg 
My System SpecsSystem Spec
21 Mar 2011   #12

Linux CENTOS 7 / various Windows OS'es and servers

Hi there

Thse applications tend to "Bypass" the normal OS -- usually to avoid any overhead in using OS processes. They also interact directly with the main hardware too.

These are very specialized applications. However things like MS office and 90% of what most people tend to run on their machines with the exception of Virtual Machines the REAL RAM will be managed by the OS and you probably won't see it taking too much of it at all unless running LOADS of concurrent applications.

This is why even a 2GB RAM machine is often more than sufficient for the vast majority of "Normal" computer users.

My System SpecsSystem Spec
21 Mar 2011   #13

Windows 10 Pro. EFI boot partition, full EFI boot

Quote   Quote: Originally Posted by GeneO View Post
A lot of photoshop operations write to its scratch disk no matter how much memory you have. For instance, if you convert a layer to a smart object it will write hundreds of MB to its scratch disk. Unless you have your scratch disk on an SSD with very fast writes, this takes 5 seconds, you can sit there and watch it! So I suspect something like that is happening. You can monitor the scratch disk for activity to see if the is the culprit.

Another example. I can write full speed to my scratch disk at about 100 MB/s. I have photoshop configured to use up to 5 of my 8 GB of memory. I just opened up a 10MP RAW image in PS CS5. That wrote about 100 MB to my scratch disk for about 1 second. I duplicated the layer. Another 100MB and 1 second to complete. I then smart sharpened the image. The scratch space jumped up 370 MB more or about 4 seconds to do the sharpening because of this. I am sure the sharpening itself takes no time, it is the writing to disk that does.

It is a real disappointment.

If I had the extra cash right now, I would get one of the new Intel 510 SSD explicitly for use as cache for Photoshop scratch, ACR and Bridge Cache, and Browser Cache. Maybe I would make it my system disk. But you need something that can do much better than HDD write speeds (>> 100MB/s) to see the difference. Many SSDs do not have write speeds that are any better than Hard disk drives. the Intel 510 claim to.

I should add how this relates to memory (I was addressing your "lag" above). I think Photoshop decides something is too big for RAM and writes it to its scratch disk - using les memory in the process/
My System SpecsSystem Spec

21 Mar 2011   #14

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2

I'd have a look at this just to make sure nothing is amiss:
My System SpecsSystem Spec

 Computer recognizes 8GB of ram, but only uses 30% of it?

Thread Tools

Similar help and support threads
Thread Forum
External HDD Not Working - Computer Recognizes but wants to Initialize
I was using my computer and everything was fine and then BSOD. I have had BSOD occasionally before (by that I mean the last one was on Nov. 12, 2014). Usually I just restart my computer, everything is fine and go about my business, well unfortunately not this time. I have 2 WD external hard...
Hardware & Devices
Suddenly my computer only recognizes 1 of 2 tuners on video card
hauppauge hvr2250 worked fine til I checked it today. head scratcher.
Hardware & Devices
Pc only recognizes 8gb of 16 gb of ram
I have 16gb(two sticks) of ram installed on my system. My pc is only recognizing one stick of ram(8gb). I have re installed the memory several times to insure it is installed properly. I have also used CPU-Z in order to determine if the motherboard is reading both sticks of ram. I have included a...
General Discussion
PC not recognizes any USB pendrive
Hello mate here, I have such problem in the my job, one PC does not recognizes usb pendrives, i re-install windows, all .inf files are in system folder but when i connect usb pendrive computer does not recognizes, pop ups error from the right low side of monitor. what is a problem? please...
Hardware & Devices
Win 7 recognizes 8GBs of RAM
Well, my RC finally expired yesterday and I was getting the dreaded pop-up to upgrade. A friend had gotten me a copy of RTM Ultimate but I had been procrastinating the installation of it. I was not able to upgrade from RC to RTM so I had to a clean install. Smooth install and extremely fast... I...
General Discussion

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 16:23.
Twitter Facebook Google+