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*** AMD "Zen" thread (inc AM4/APU discussion) ***

Relentless81 said:
I'm going 2666 C13 - Cant find a single DDR4 test/review that states going any faster is worth the extra money
Click to expand...

A quick general guide to understand the RAM speeds and timings, because both represent how good the memory module is.
lets take for example my RAM.
3600Mhz CL16-16-16-36 it's equivalent performance module at 3200Mhz should be CL14-14-14-34, any timing higher (eg CL15) is slower module.
4000Mhz CL18 is equivalent performance module as the other two above.


So taking that as rule of thumb,
3000Mhz CL14 ram is slower than all above
3000Mhz CL16 ram is slower than all above (incl 3000C14)
2866Mhz CL15 is even slower than all the others above it (incl 3000C14 & 3000C16).

and so on.

Buying a good module, you can down clock it and apply tighter timings. Eg the 3600C16 can run as 2800CL12 or 3000CL13, and if lucky 3000CL12 without adding power.

And here comes the overclocking.... adding extra power (and having good cooling) and if the the 3000Mhz CL14 is good (example), can do 3200CL14 if not 3333CL14, so you get better performance.

I hope that helped.
 
Smudge said:
Going off Gibbo's post about getting the 1700 to 4Ghz I have some reservations about pre ordering.

You can buy a 1700 for £319 + expensive X370 mobo (Gibbo states the B350's arent upto the job) for £250+ so £569+ and OC to try and get 4Ghz.

You can buy a 1800x for £488 + cheap B350 mobo for £80 so £568 and get 4Ghz.

With the 1700 you might end up with a lemon so not reach 4Ghz.

With the 1800x if it doesnt at least get 4Ghz advertised speed you send it back?

With the 1700 you end up with a more feature rich mobo if you need all the extra options but with the 1800x you could always upgrade the mobo down the line.

Without any real information its crazy to buy until benchmarks are out.
Click to expand...

unless you are desperate, you are better off waiting a few months anyway, and see how bios updates and the 6c and 4c chips compare.
 
Panos said:
And because the 1700 looks like the best value for money product, if you buy a good motherboard.......

http://wccftech.com/amd-ryzen-7-1700-overclocked-4ghz/

The hype train is now an EMD SD90MAC. If the 1800X overclocks a 10% at least then it will be transformed to a EMD DDA40X and be unstoppable.

(those who know about trains will understand, but I am referring to the most powerful engines ever made, a 6000bhp and 6600bhp respectively).
Click to expand...

Poor gibbo trying to be discreet and they go and use his words
 
Panos said:
A quick general guide to understand the RAM speeds and timings, because both represent how good the memory module is.
lets take for example my RAM.
3600Mhz CL16-16-16-36 it's equivalent performance module at 3200Mhz should be CL14-14-14-34, any timing higher (eg CL15) is slower module.
4000Mhz CL18 is equivalent performance module as the other two above.


So taking that as rule of thumb,
3000Mhz CL14 ram is slower than all above
3000Mhz CL16 ram is slower than all above (incl 3000C14)
2866Mhz CL15 is even slower than all the others above it (incl 3000C14 & 3000C16).

and so on.

Buying a good module, you can down clock it and apply tighter timings. Eg the 3600C16 can run as 2800CL12 or 3000CL13, and if lucky 3000CL12 without adding power.

And here comes the overclocking.... adding extra power (and having good cooling) and if the the 3000Mhz CL14 is good (example), can do 3200CL14 if not 3333CL14, so you get better performance.

I hope that helped.
Click to expand...


tCAS= (CAS * 2000)/Memory Frequency will tell you the column address. It's a bit crude but gives you an outline of the scaling.


3600 C16 = 8.8
3200 C14 = 8.75
 
Panos said:
And because the 1700 looks like the best value for money product, if you buy a good motherboard.......

http://wccftech.com/amd-ryzen-7-1700-overclocked-4ghz/

The hype train is now an EMD SD90MAC. If the 1800X overclocks a 10% at least then it will be transformed to a EMD DDA40X and be unstoppable.

(those who know about trains will understand, but I am referring to the most powerful engines ever made, a 6000bhp and 6600bhp respectively).
Click to expand...

OMFG you're linking to wccftech who are giving their source as this thread :D
 
 
 
8 Pack said:
They all support XFR!!

Gibbo states that u need a high end board because these cpu are a challenge for the vrm.

We have seen down clocking on lower end models.
Click to expand...

This sounds so much like previous AMD launches.

Panos said:
I had a 4930K @ 4.5 was doing great rendering job, however compared to the 6700K @ 4.7 was anaemic when came to gaming, buy a good margin.(same applies to the 4820K @ 4.9Ghz)
Especially in WOT which is single thread game, even the 4820K @ 4.9Ghz is trashed by the 6700K @ 4.7

So I will wait and see. If Ryzen 1800X doesn't overclock well if at all at 4.5 with good WC system (dual 480 rads for example), then I will pass and wait for Zen+.
Even if I am excited by the overall performance of the product.

Because overclocking is a a good part of what I want from a product. If cannot be done, why are we here???? Lets change the name of the forums to "stockclockers" and be done with it........
Why we spend all that money on fancy watercooling if not for the fun of overclocking and the hobby overall?
We could just go value for money, and use a console for all our gaming.........
Click to expand...

I am on the other end of the spectrum since I tend to use SFF PCs with Shuttle or mini-ITX form factor motherboards. I don't tend to bother to overclock since I prefer smaller PCs,and overclocking is not a good idea if you want a smaller case.For me the game with the biggest issues would be Planetside 2 but going from some of the comments here and elsewhere,even going from a SB to a SKL CPU still does not solve the slow downs in the game and in the end I am not going to throw money at poorly optimised single core titles,where an overclocked Core i3 7350K is probably better than a £1000 Core i7 6900K. TBH,I don't care if Intel can eek out a few percent higher clockspeeds or IPC,when it is an ****** joke what they did with the Xeon E3 4C/8T CPUs which were locked out of consumer motherboards.

So instead of as low as £175 for a locked 4C/8T which was ideal for my purposes I now need to spend nearly £300 on a replacement for my Xeon E3 1230 V2. I did a few builds for mates using that line of CPUs,and they actually had a bit lower TDPs,etc too.

The Xeon E3 chips will work in a normal motherboard but Intel limited it on purpose to the C232 chipset which is using the same 1151 socket.

Even during the Core2 days you could get Xeon CPUs for consumer sockets.

Intel can go **** themselves unless they rapidly drop prices.

I am not going to pay £300 for a reheated version of a CPU which Intel sold profitably for £175 a few years ago.

The fact that Ryzen is a SOC for me,probably means it might be better suited for my purposes,as instead of having to deal with a passively cooled chipset(which can probably run hot in a SFF system),it can be actively cooled under the CPU cooler. I am also increasingly fed up by Intel changing sockets all the bloody time. I had a higher end H67 mini-ITX motherboard which died out of warranty and by that time the only sanely priced socket 1150 mini-ITX motherboards under £110 were B75 ones which had worse specs.
 
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