Questions tagged [ddr3]

Double Data Rate 3 (DDR3) is a type of DRAM (dynamic random-access memory) used in computers

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Is a DDR3 MB compatible with DDR2 RAM?

If a motherboard's specifications say it supports DDR3 SDRAM sticks, would I be correct to assume it is also compatible with DDR2 RAM? Am I wrong, or does it depend on the motherboard?
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27 votes
4 answers
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Can I use two types of DDR3 in the same motherboard?

I have a DDR3 RAM of 1333MHz of 4GB on my motherboard (Asus H61M). I have another stick of RAM DDR3 1600 MHz of 4GB. Can I use this in the other slot along with the original to reach a combined 8GB? ...
alansiqueira27's user avatar
21 votes
3 answers
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How to check if two memory modules are being used with dual channel?

I have two 1333 DDR3 memory modules with different brands. I wonder if they can be used in a dual channel setup. How can I check that?
Jader Dias's user avatar
15 votes
1 answer
75k views

If a motherboard doesn't explicitly support a RAM frequency, is still compatible?

For example, my Asrock P67 Extreme4 says this: Supports DDR3 2133(OC)/1866(OC)/1600/1333/1066 non-ECC, un-buffered memory Is RAM clocked at 2400 MHz compatible? Will the performance be downgraded or ...
Félix Sanz's user avatar
25 votes
1 answer
38k views

SK hynix memory module PC3-10600S-9-11-F3: What does "11-F3" mean?

I know what are: PC3 (same as DDR3), 10600 (bandwidth in MB/s), S (stands for SODIMM, it's RAM for laptops), 9 (CAS latency). Hynix HMT351S6CFR8C-H9 4Gb (front view): But I couldn't find anything ...
Qeeet's user avatar
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8 votes
1 answer
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Can I put a DDR3 ram in DDR3L slot

So I have a mini-PC which I need to buy RAM for. Now the specs say that it supports DDR3-L. I am thinking of getting the following kit: CORSAIR Vengeance (2x8) 16GB 204-Pin SO-DIMM Model ...
treecoder's user avatar
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6 votes
5 answers
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3GB of RAM showing up as 2GB

Last year I built a Core i7 920 system based on the ASUS P6T Deluxe motherboard. I have 3x1GB of DDR3 (triple-channel configuration), but only 2GB is being reported by: Windows XP, CPU-Z, the BIOS. Is ...
Scott's user avatar
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4 votes
1 answer
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Should we expect DDR3L RAM to work on the Intel first-gen Core i3 platform?

I have a 4 GiB DDR3 RAM, a 4 GiB DDR3L RAM, and a laptop with an Arrandale-based Intel Core i3 CPU and an Intel HM55 chipset. The DDR3 RAM works fine on both Linux (Ubuntu 12.04 64-bit) and Windows (...
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2 votes
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How to check if RAM is working in dual-channel mode?

A friend of mine arranged three RAM modules of 2GB next to each other on a motherboard that supports dual-channel mode, but is not sure whether it's working. CPU-z shows only a gray area in the memory ...
programstinator's user avatar
2 votes
1 answer
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Combining multiple DIMMs in one memory channel

Every electronics engeneer knows that connecting more chips on the same line increases its capasistence and, thus, degrades the frequency. So, memory speed must be dependent on the number of chips in ...
Val's user avatar
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2 answers
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How to find out RAM speed

I was in a shop today and wanted to know the speed of the installed DDR3 RAM. The assistant went to Task Manager > Performance and under the memory tab it said 800MHz. He said this means it's 1333MHz. ...
Mitya's user avatar
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20 votes
5 answers
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Optimal RAM configuration: one large DIMM vs multiple smaller DIMMS?

I have always been told there were performance advantages in using multiple smaller DIMMS vs a single larger DIMM (as the combined bandwidth of all the motherboard's RAM slots would be used). My boss ...
Austin ''Danger'' Powers's user avatar
9 votes
1 answer
43k views

What does "DIMM socket support" mean in a QVL (Qualified Vendors List) over RAMS for a motherboard?

If you look at the DDR3 1333 Qualified Vendors List (QVL) list for the Asus Z87-A motherboard: http://dlcdnet.asus.com/pub/ASUS/mb/LGA1150/Z87-A/Z87-A_DRAM_QVL_0730.pdf You can see a column called "...
corgrath's user avatar
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6 votes
1 answer
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What happens if I install slower RAM than specified compatible with the motherboard?

Specifically, will there be any instability or other problems if I install DDR3 1066MHz (PC3-8500) RAM with a motherboard rated to be compatible with DDR3 1600MHz (PC3-12800) & DDR3 1866MHz (PC3-...
Jin's user avatar
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6 votes
2 answers
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Do DDR3 SODIMM modules come in sizes greater than 8GB?

I'm really interested on buying a 1x16GB DDR3 SODIMM module because my laptop has only one memory slot. I know that DIMM modules with 16GB do exist. But I can find only packs with two 8GB modules of ...
Thibaut's user avatar
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5 votes
2 answers
48k views

Difference between PC3-8500s and PC3-8500f

Is there any real difference between PC3-8500s and PC3-8500f? It's Laptop memory, DDR3. Would a laptop which can take one also be able to use the other?
danpker's user avatar
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5 votes
3 answers
535 views

For what sort of workload can a Core i7-920 be faster than a i7-860?

Core i7-860 has a slightly higher clock speed (2.8 vs 2.66 GHz) Core i7-920 has QPI and tri-channel DDR3 (vs DMI and dual-channel)
netvope's user avatar
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4 votes
1 answer
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Different RAM voltage

on my PC I have 2 kingston RAMs. The only difference is that one runs at 1,35V, the other at 1,5. As you can see frequency, latency and others doesn't change. My motherboard is an Asus K30AD_M31AD-...
Gabriel Butoeru's user avatar
4 votes
4 answers
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Why can I only use 3.47GB of my 8GB of RAM on my Windows 7 64-bit machine?

I had 4GB of RAM and just installed another 4GB. When I go to my computer's properties I see it recognizes all 8GB but I'm still only able to use 3.47GB. My motherboard is an Asus P7H55-M which is ...
Roy Toledo's user avatar
4 votes
6 answers
13k views

Memory upgrade to 8GB on unibody MacBook

I bought the 13" unibody MacBook one month prior to it's upgrade to become the new improved 13" unibody MacBook Pro (with unopenable battery compartment, extra 3 hours of battery life, more color ...
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3 votes
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Would I see benefit if my RAM is faster than my processor's FSB?

I always thought processor's FSB was the limit of how fast the RAM could be. However, while configuring a Lenovo laptop, I see options for RAM that's faster than the CPU's FSB CPU = Intel® Core™ i5-...
Belmin Fernandez's user avatar
3 votes
2 answers
847 views

6 x 2048 faster than 3 x 4096 DDR3 triple channel memory modules?

Considering same timings, brand and technology triple channel RAM memory modules would: 6 x 2048 MB modules be faster than 3 x 4096 MB modules ?
Dragos's user avatar
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3 votes
1 answer
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Can I mix an 8GB chip with a 4GB chip and still get dual channeling?

This is the 4GB version of the chip I want; Crucial Ballistix Sport 4GB Single DDR3 1600 MT/s (PC3-12800) CL9 @1.5V UDIMM 240-Pin Memory Module BLS4G3D1609DS1S00. I have the 8GB version of it already. ...
iOSAaronDavid's user avatar
2 votes
4 answers
1k views

Is DDR3 worth it? [closed]

I'm looking at some of the gaming PC's on NCIX.com and the ones that support DDR3 are at least about $400 more than the most expensive DDR2 PC's(when other factors are ignored). Is it worth upgrading ...
Steve's user avatar
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1 vote
1 answer
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Do DDR3 modules come in sizes greater than 2GB?

The standard answer to how much RAM i can install in my Acer Aspire One D255 is "2 gigs" and the standard reason given is "because it only has one RAM slot". Does this mean DDR3 RAM modules only go up ...
hippietrail's user avatar
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1 vote
1 answer
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Do these memtest86 results indicate a defective memory module?

I just ran memtest86 and I received these results (the picture is from the 4th test of the second pass): Obviously something really bad is happening. I guess that red row should not be there. Also ...
Ladislav Mrnka's user avatar
1 vote
2 answers
1k views

What kind of RAM is compatible with my system? [closed]

I want to upgrade my RAM but am not sure if I should/can get DDR2 or DDR3. Sound like a stupid question, but CPU-Z is showing the following: At the top, it is saying that it’s DDR3 RAM, but I have ...
Scott's user avatar
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0 votes
1 answer
115 views

Memory upgrade compatibility issue

I have an ASUSTek P8P67-M (LGA1155) motherboard on my desktop / home computer, which actually has only 8GB RAM, based on two DDR3 1333MHz (PC3-10700H) Corsair 4GB Modules (Part Number CMV4GX3M1A1333C9)...
Gonzalo Vasquez's user avatar
0 votes
1 answer
304 views

Mixing different RAM voltages and speeds

I have 8 GB of Kingston's DDR3 1333 MHz 1.5 V memory installed in my PC. Can I mix it with Kingston's DDR3 1600 MHz 1.65 V memory? I have an Asus P8P67 Rev. 3.0 motherboard, am I able to overvoltage ...
MikkoP's user avatar
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0 votes
1 answer
575 views

Can I install DDR3 1333 RAM into a motherboard that supports DDR3 2200?

Can I install DDR3 1333 MHz RAM into a motherboard that supports DDR3 2200 RAM? I think it should be acceptable, but don't want to risk the investment I've already made on the motherboard For ...
Everyone's user avatar
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0 votes
2 answers
235 views

Does the amount of RAM have an impact on performance?

Can anyone tell me how much difference there would be between a 3 GB DDR3 RAM and a 2 GB DDR3 RAM, performance wise. And can we, based on performance, compare to any DDR2 RAM's
Jayesh's user avatar
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0 votes
1 answer
507 views

Semi-Hybrid Triple Channel DDR3

I have 3 x Corsair 2GB DDR3 1600MHz, and I want to expand it with 3 more DIMMs. Obviously to keep my triple-channel, I'd be best to buy an identical 3 DIMMs kit as I have now, because triple-channel ...
Avihu Turzion's user avatar
0 votes
1 answer
6k views

Why is DDR3 1.5V RAM not working with 1.35V motherboard?

I have a Toshiba C55-A-1M7 laptop with 4GB DDR3L RAM(1600MHz) on a 1.35V motherboard. I purchased 4GB DDR3 RAM(1600MHz) but the new RAM is not working. I've tried the new RAM on a 1.5V motherboard ...
Gifron's user avatar
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-1 votes
2 answers
696 views

can i merge 4gb of ram at 1333mhz with 4gb of ram at 1600mhz

hi im running 2x2gb of DDR3 ram at 1600mhz for a total of 4gb of ram i am wanting to know if it will be a good idea to install 2x2gb of DDR3 ram at 1333mhz will it just slow down my system or will the ...
steve's user avatar
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