DDR4 3000MHz Vs DDR4 3.333MHz

[Catalonia]

Hi Guys, I'm just about finishing my RIG, and the only thing left is the RAM. 

 

This is my actual build: http://pcpartpicker.com/list/BQwZf8

 

The basic for this thread is, I've got the Asus Rampage V Edition 10 with the Broadwell-e 6850k. 

I decided to order the Corsair Dominator Platinum 32GB DDR4 4x8GB 3000MHz but Amazon is late with the delivery and offers me for the same price the Corsair Dominator Platinum 32GB DDR4 4x8GB 3333MHz

 

Do you think is worth to accept the trade? I intend to enable XMP 2.0 and not OC the CPU (at least at the beginning). This MB shouldn't have any problem with this speed, but how about broadwell-e? Does it scales the RAM speed as easy as Skylake without too much trouble? 

 

Thanks!

[TheGamingBarrel]

It doesnt scale aswell as skylake, but it is pretty good in comparison to Haswell-E

[desertcomputer]

Why not? if it same price why not get faster one ... if the cas lactecy is same 

[Catalonia]

1 minute ago, TheGamingBarrel said:

It doesnt scale aswell as skylake, but it is pretty good in comparison to Haswell-E

 

So, would you accept the trade and set the DDR4 at 3.333 with XMP?

[TheGamingBarrel]

Just now, Catalonia said:

 

So, would you accept the trade and set the DDR4 at 3.333 with XMP?

100% Its a free improvement.

[Skiiwee29]

same price take it. no harm no foul.

[Catalonia]

1 minute ago, MrUnknownEMC said:

Why not? if it same price why not get faster one ... if the cas lactecy is same 

The latency is not the same, but with 333MHz more shouldn't matter

 

DDR4 3.000MHz: 15-17-17-35

DDR4 3.333MHz: 16-18-18-36

 

 

[desertcomputer]

Just now, Catalonia said:

The latency is not the same, but with 333MHz more shouldn't matter

 

DDR4 3.000MHz: 15-17-17-35

DDR4 3.333MHz: 16-18-18-36

 

 

I like lower latency more but it look like a good deal either way you accept or decline you will get similar performance. 

[Catalonia]

Just now, MrUnknownEMC said:

I like lower latency more but it look like a good deal either way you accept or decline you will get similar performance. 

I could wait and get the 3.000MHz if this means less heat, and not having to stress the CPU too much (having the same performance)

[Trevor87]

The motherboard can take the DRR4 3.333 Mhz. 

It slit improvement. 

The CAS is only little high you wont notice it. 

Go with DRR4 3.333MHZ. 

[Nena Trinity]

Both is overkill but if your board can handle 3333MHz then sure go for it unless the price is crazily high, fact is past 2800MHz you will not see any "notable gains" sadly...

[Catalonia]

I have just seen that the 3.333MHz modules come with an Airflow Fan, when the 3.000MHz don't. 

 

Does this means that they heat more for marginal to none gains?

[Imakuni]

4 minutes ago, Catalonia said:

I have just seen that the 3.333MHz modules come with an Airflow Fan, when the 3.000MHz don't. 

 

Does this means that they heat more for marginal to none gains?

No. That's for people that want to do insane RAM OCs. If you are just setting up XMP, you won't need it.

3 hours ago, MrUnknownEMC said:

I like lower latency more but it look like a good deal either way you accept or decline you will get similar performance. 

3 hours ago, Trevor87 said:

The motherboard can take the DRR4 3.333 Mhz. 

It slit improvement. 

The CAS is only little high you wont notice it. 

Go with DRR4 3.333MHZ. 

I suggest you two start reading on latency and how it works. Because if you knew about, you'd both realize that the 3333mhz kit actually has LOWER latency than the 3000 one, not higher.

[Catalonia]

3 minutes ago, Imakuni said:

No. That's for people that want to do insane RAM OCs. If you are just setting up XMP, you won't need it.

I suggest you two start reading on latency and how it works. Because if you knew about, you'd both realize that the 3333mhz kit actually has LOWER latency than the 3000 one, not higher.

 

Yeps, you're right about the total timings. 

 

I am just planning to start with XMP 2.0 and nothing more. No extra OC in the RAM or the CPU.  Maybe in the future play a bit with OC the CPU but not so much. 

 

So, what would you choose? The 3000 or the 3.333 with the Rampage V Edition 10 and Broadwell-e 6850k? 

 

 

[Imakuni]

Just now, Catalonia said:

 

Yeps, you're right about the total timings. 

 

I am just planning to start with XMP 2.0 and nothing more. No extra OC in the RAM or the CPU.  Maybe in the future play a bit with OC the CPU but not so much. 

 

So, what would you choose? The 3000 or the 3.333 with the Rampage V Edition 10 and Broadwell-e 6850k? 

The 3333 kit! Obviously! Higher speed, lower latency, same price... it's not even a contest.

 

Quick, tell them YOU WANT IT RIGHT NOW before they change their minds about the offer!

[Catalonia]

4 minutes ago, Imakuni said:

The 3333 kit! Obviously! Higher speed, lower latency, same price... it's not even a contest.

 

Quick, tell them YOU WANT IT RIGHT NOW before they change their minds about the offer!

lol

 

 

I had quite some surprises last year with an Asus Rampage V Extreme and a 5930K with Kingston HyperX DDR4 at 3.000MHz... 

 

Even setting the XMP the board didn't boot. I had to manually change a zillion settings to have the RAM to work, and in the ROG forums people said that the chip didn't OC well for the 3k RAM. That's why I was planning to play a bit more conservative and not pushing the RAM to the limit. 

 

If I can put the 3.333MHz, enable XMP, get the speed and the timings right without having to do anything I would be more than happy. 

 

I guess I'll take the 3.333MHz, which by the way are this ones:

 

http://www.corsair.com/es-es/dominator-platinum-series-8gb-2-x-4gb-ddr4-dram-3333mhz-c16-memory-kit-cmd8gx4m2b3333c16

 

 

Thanks for the advises! 

[Imakuni]

1 minute ago, Catalonia said:

I had quite some surprises last year with an Asus Rampage V Extreme and a 5930K with Kingston HyperX DDR4 at 3.000MHz...

Let me guess: the IMC on your CPU wasn't good enough to handle the speed...

1 minute ago, Catalonia said:

Even setting the XMP the board didn't boot. I had to manually change a zillion settings to have the RAM to work, and in the ROG forums people said that the chip didn't OC well for the 3k RAM. That's why I was planning to play a bit more conservative and not pushing the RAM to the limit.

....yup, seems like it.

[Catalonia]

Just now, Imakuni said:

Let me guess: the IMC on your CPU wasn't good enough to handle the speed...

....yup, seems like it.

 

Let's see how this Broadwell-e behaves 

[MageTank]

3 hours ago, MrUnknownEMC said:

I like lower latency more but it look like a good deal either way you accept or decline you will get similar performance. 

3333 will have lower latency than 3000, even if the primary timings are not as tight. As the raw bandwidth increases, the overall latency tends to decrease as long as tertiary timings remain the same. 

 

People often think that the primary timings are the be all, end all when it comes to latency, but that can't be further from the truth. You will get the most out of your latency from tertiary timings, RTL and IO-L offsets. It's also not about getting these timings as tight as possible, it's about finding the best balance between them. Lowest is not always better. Some tertiary timings like higher values (Samsung) while others (Hynix) like lower values on specific timings (Such as tRDRD_DD and tRDRD_DR). Your ability to get the most out of these timings will depend mostly on your IMC. These timings have the largest impact on IMC stability out of all of the timings for ram. It's why X99 (Haswell-E, don't know much about Broadwell-E) sucked at memory overclocking in general. Most of the time you couldn't get XMP kits to even load their speeds. Once you did, they were still slower than Skylake setups, even with quad channel, because the bandwidth and latency was absolutely crippled by tertiary timings to get the high clock speed number to run stable. You would get the most bandwidth out of X99 by focusing less on clock speeds, and focusing more on tertiary timings in general alongside quad channel. 

 

I should also note, that as of a recent discovery of me purchasing two different brands of DDR4 the other day (Kingston HyperX Fury, and EVGA SC DDR4) i learned that 8GB DDR4 can in fact, be single rank. Unlike DDR3, where all 8GB sticks were dual rank. I believe this is because of the way consumer capacity has doubled. Why is this important? Well, it means when running 4 or 8 x 8gb, you run the risk of no longer having rank interleave, which will be detrimental to your overall memory bandwidth. Just thought I would share that discovery here, since memory is being discussed. 

[Imakuni]

19 minutes ago, MageTank said:

I should also note, that as of a recent discovery of me purchasing two different brands of DDR4 the other day (Kingston HyperX Fury, and EVGA SC DDR4) i learned that 8GB DDR4 can in fact, be single rank.

• Single Rank 4gb sticks: Check.
• Dual Rank 4gb sticks: Check.
• Single Rank 8gb sticks: Check.
• Dual Rank 8gb sticks: Check.
• Dual Rank 16gb sticks: Check

All that's left now is to find consumer kits with 4 ranks (all capacities) and single rank 16gb sticks for me to complete my stamp collection 

[MageTank]

Just now, Imakuni said:

• Single Rank 4gb sticks: Check.
• Dual Rank 4gb sticks: Check.
• Single Rank 8gb sticks: Check (this took a while....)
• Dual Rank 8gb sticks: Check.
• Dual Rank 16gb sticks: Check

All that's left now is to find consumer kits with 4 ranks (all capacities) and single rank 16gb sticks for me to complete my stamp collection 

So far, I can confirm without a doubt, that cheap Micron IC kits are single rank. The EVGA and Kingston Fury kits were both using the exact same Micron IC's (They cost $70 for 16GB from Microcenter). However, the cheap G Skill Samsung kit i have, is still dual rank. I want to check with some contacts that use cheap Hynix corsair kits to see if they are dual rank as well. If it's only Micron that offers single rank 8GB sticks, then I will be able to tell others to avoid them if memory performance is important to them. 

 

If anyone has any 8gb sticks of DDR4 that they would like to test/contribute information to, download Aida64 and check the SPD tab. You don't need the paid version to see memory IC and ranks. Would greatly appreciate all information that we can gather. 

[Catalonia]

Just now, MageTank said:

So far, I can confirm without a doubt, that cheap Micron IC kits are single rank. The EVGA and Kingston Fury kits were both using the exact same Micron IC's (They cost $70 for 16GB from Microcenter). However, the cheap G Skill Samsung kit i have, is still dual rank. I want to check with some contacts that use cheap Hynix corsair kits to see if they are dual rank as well. If it's only Micron that offers single rank 8GB sticks, then I will be able to tell others to avoid them if memory performance is important to them. 

 

If anyone has any 8gb sticks of DDR4 that they would like to test/contribute information to, download Aida64 and check the SPD tab. You don't need the paid version to see memory IC and ranks. Would greatly appreciate all information that we can gather. 

 

 

I will definitelly check this out when I get my Corsair Dominator 4x8GB DDR4 3333

[MageTank]

Just now, Catalonia said:

 

 

I will definitelly check this out when I get my Corsair Dominator 4x8GB DDR4 3333

With them being clocked that high, and judging by the timings posted up top, I can almost 100% guarantee they are dual rank and Hynix. Samsung IC's generally like their primary timings to remain even (16-16-16 for example) while Hynix tends to operate at mismatched values (16-18-18). This isn't always true, but it's a general rule of thumb when guessing IC's without the information being posted somewhere. It has held true for every Samsung kit I have purchased, and most of my Hynix kits (Other than my Panram hynix kit, which was 2133 13-13-13-35). 

 

Still, a confirmation from Aida64 will be helpful nonetheless. 

[Imakuni]

1 minute ago, MageTank said:

If anyone has any 8gb sticks of DDR4 that they would like to test/contribute information to, download Aida64 and check the SPD tab. You don't need the paid version to see memory IC and ranks. Would greatly appreciate all information that we can gather. 

Oh, you can use Aida for that? I always used Typhoon Burner.

 

Well, to be fair, I only really checked for rank on sticks I own once or twice. Still, nice to know Aida shows that info.

[ace_cheaply]

Why so overkill on the psu?  Unless you're running quad sli you'll never need 1500W.  Your system will use ~400 max.  I mean, if you have the money spend it how you want, just seems like you could buy another 950 pro or a full custom water loop for the money you'd save for an 850i or something similar.