Hi,
I'm looking to upgrade a Gigabyte GA-H55M-S2V motherboard. I've got a Core i7-870 on the way and am looking to match it with 8Gb RAM.
According to Wikipedia the Core i7-870 goes with 1333MHz RAM. I've got some 1600MHz RAM on my watch list.
My first thought was that it may chop down to 1333, which I don't mind.
Will it work?

I was looking here but when it started talking about voltages I backed off.
https://www.tomshardware.com/reviews/memory-scaling-i7,2325.
html

Edited by bit at 5:27 am, Wed 30 Dec

bit - 2020-12-30 05:18:00

i7-870 or i7-8700k

mrfxit - 2020-12-30 07:29:00

according to here No - max 1333MHz
https://ark.intel.com/content/www/us/en/ark/products/41315/i
ntel-core-i7-870-processor-8m-cache-2-93-ghz.html

king1 - 2020-12-30 07:51:00

mrfxit wrote:

i7-870 or i7-8700k

I7-870.
That for me is an upgrade. ???? It's just a spare computer.

Edited by bit at 8:34 am, Wed 30 Dec

bit - 2020-12-30 08:32:00

Most ram have a timing table with lower frequencies than the max clock.
In unlikely scenario that isn't enough - your mainboard probably allows your to manually adjust ram clock speeds.

acura - 2020-12-30 10:59:00

Forget about increasing voltages or overclocking, it's not worthwhile on such an old system and will likely hasten it's demise.

You can slot 1600 in and it'll run at 1333mHz just fine, if possible run two (or four) sticks rather than one (dual channel is a little faster)

vtecintegra - 2020-12-30 11:01:00

vtecintegra wrote:

Forget about increasing voltages or overclocking, it's not worthwhile on such an old system and will likely hasten it's demise.

You can slot 1600 in and it'll run at 1333mHz just fine, if possible run two (or four) sticks rather than one (dual channel is a little faster)

Yeah I reckon.

bit - 2020-12-30 15:46:00

vtecintegra wrote:

Forget about increasing voltages or overclocking, it's not worthwhile on such an old system and will likely hasten it's demise.

You can slot 1600 in and it'll run at 1333mHz just fine, if possible run two (or four) sticks rather than one (dual channel is a little faster)

Agreed, doesn't pay to tinker with voltages etc on older boards unless you are willing to take the risk.

Anything will do fine but if you can find some 12800mhz ram, that would be a nice upgrade in dual channel mode

Not a dramatic increase in speed but it's like adding a few layers of icing on that cake.
12800mhz ram x 2 or 4 sticks to max amount
SSD Hdd
Fresh o/s install
Fresh thermal paste on the Cpu (done properly)
Basic 1gb or 2gb video card

mrfxit - 2020-12-31 08:16:00

mrfxit wrote:

12800mhz

But it would still run at 1333?
What's the point?

bit - 2020-12-31 13:57:00

RAM still on the way. (12800mhz)
I have installed the new CPU after which nothing appears on the screen although the hard drive chatters away and the keyboard lights go on and off. Seems like the video has dropped out. Hope it rectifies when the new RAM arrives but sounds doubtful. Maybe I should have set the BIOS to fail safe defaults before removing the old CPU.

bit - 2021-01-03 06:32:00

Its not the speed you should be worried about, fast ram will generally run slower, its the voltage. Without going and looking for you you need to check if the gen of ram you are buying runs at the voltage your board provides on its sockets.

ronaldo8 - 2021-01-04 10:29:00

Who said anything about overclocking ? The OP didn't, infact just the opposite, he's looking to underclock it. Nor is he trying to overvolt it.

However he may well end up overvolting it accidentally if his generational mismatch is wide enough. Some sticks are resillent enough to run at older generation voltages, often those made around the date if the transition are designed with chips made with higher input range but eventually they end up going to less bandwidth as time goes on in the quest for tighter timings and performance. This something of a repeating pattern in electronics design.

ronaldo8 - 2021-01-04 11:49:00

Op it would help if you listed the part number and brand of the ram you are looking at not just the details you thought important, by doing so you are prefiltering information for those you seek help from, a classic pain in the arse on this board that puts many questions in the too hard/can't be bothered basket. Then you could be given a definitive answer.

Nothing personal, it happens all the time in all diagnostic situations.

ronaldo8 - 2021-01-04 11:57:00

I hear you Ronaldo. I haven't changed the RAM yet. I've only changed the CPU.
I could have done a better job of choosing the RAM as the supplier didn't specify. It hasn't arrived yet.

bit - 2021-01-04 20:28:00