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

Ryzen 5 will have 3+3 and 2+2 cores to maintain symmetry, contrary to the 4+2 and 4+0 i was expecting knowing the limitation of infinity fabric, so that leaves these 6/4 core Ryzen with the same issue as the R7.
bummer
 
melmac said:
Ryzen CPU's perform better with faster memory but There are currently problems with some motherboards supporting higher speed memory. If you overclock, only the x370 boards allow you to overclock the memory B350 motherboards cannot. It's better to use 2 sticks of ram rather than 4 at the moment if you are thinking of overclocking.

Is that the current status in a nutshell? If I have an AM4 motherboard that supports 3000MHz DD4 memory, is it better to buy ram that is running 3000MHz than 2400MHz? If I buy 3000MHz memory, can I buy a B350 board because I wont be overclocking the memory?
Click to expand...

The statement is not really true, you can oc mem on B350 too, but B350 and most X370 motherboards can only overclock via mem divider, so it will only run 2400/2666/2933/3200. If you have 3000 mem for example then you have to settle for 2933 or if you're lucky, 3200. On top end X370 boards like asrock taichi and asus CH6 you also have the option to adjust BCLK clock to fine tune the memory.
 
They do exist...

D8x5OUth.jpg
 
nemesisuk2 said:
Geil evo x 2x8gb 3000mhz
Click to expand...
Ah ok, I have Team Group
Dark T-Force 16GB (2x8GB) DDR4 PC4-24000C16 3000MHz Dual Channel Kit - Grey
TDGED416G3000HC16CDC01
  • 3000MHz RAM Speed
  • CAS 16-18-18-36 Timings
  • 1.25-1.35v VDIMM
  • Lifetime Warranty with OcUK.
Waiting for the 1600X and hoping the boards mature a bit. If I sold my current i5 4690K/ Gbyte Z97X Gaming 3 and 16Gb(2x8Gb) Hyper Fury X 1866Mhz DDR3 ram I would have plenty cash to splash, also have £400 put away. Cant convince myself I need 8c16t cpu though. Currently looking at Gbyte AB350 Gaming 3 board. I am not into overclocking so I don't really need an expensive board, I think they are overpriced anyway.
 
33332533352_c04509ce14_o.png


I got up and running last night. Now I need to figure out what's going on with voltages. At stock settings, it's running at 1.4 on normal clocks, but when it boosts, it shoots up to 1.49. This is with optimized settings loaded in bios with only memory speed turned up to 3200. I turned on DOC 1, and it set the memory the correct speed, and I had a huge drop in temps. I am on custom water, and stock settings I idle at 42C. On DOC 1, that drops to 22C as reported in the BIOS. The only problem, DOC 1 is not stable. It shut down on me at the desktop.
 
sityeuropa said:
Is there any way to test specific instruction sets. I hear there is a possible issue with FMA3?

Does anyone have Premiere CC they can test also?
Click to expand...

I did some more poking around with this. I can confirm that the Intel Linpack benchmark for Linux is full of FMA3 instructions (vfmadd...). You can check Windows executables in the same way (objdump) but I don't have Premiere to check specifically.

You could grab a Windows executable of objdump or if you must know just send me the Windows exe.
 
Hotwired said:
I can't believe how many mobo makers are jumping on the bandwagon of the massive MASSIVE plastic heat traps over the IO.

Nothing wrong with covering the VRM heatsinks right?
Click to expand...
It actually meets the top of the angled heatsink so the air hits the heatsink, runs up it, up the shroud into the jetstream of the rear case fan. It's a good design just one that isn't instantly understandable. When you think about it it's not like people have fans pointed at both sides of that VRM heatsink anyway (unless they're mad ofc).
 
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ubersonic said:
It actually meets the top of the angled heatsink so the air hits the heatsink, runs up it, up the shroud into the jetstream of the rear case fan. It's a good design just one that isn't instantly understandable. When you think about it it's not like people have fans pointed at both sides of that VRM heatsink anyway (unless they're mad ofc).
Click to expand...

...which it would do without the shroud?

Instead the back of the heatsink and the top is physically covered which limits air movement across the top and up the back.

There is no practical purpose for the oversize IO shrouding. They're tarting up the board.

Pretty sure I've seen criticism from pro overclockers on that subject too.
 
Hotwired said:
...which it would do without the shroud?
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Yeah but it wouldn't be as guided, I'm not saying the is a massive boost to performance or anything, just that it looks cool and despite rumors doesn't negatively affect it.

I was a bit worried when I first saw the shroud design too until I thought it through. I initially thought it was going to channel all the air into the IO backplate lol.

Hotwired said:
Instead the back of the heatsink and the top is physically covered which limits air movement across the top and up the back.
Click to expand...
The top isn't covered as that would defeat the purpose.

Hotwired said:
Pretty sure I've seen criticism from pro overclockers on that subject too.
Click to expand...
Well yes if you're going to be using it on a test bench with a 120mm industrial fan pointed directly at the VRM it will cause an issue but I don't think it's unreasonable to expect those niche users to remove the shroud :p
 
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joeyjojo said:
I did some more poking around with this. I can confirm that the Intel Linpack benchmark for Linux is full of FMA3 instructions (vfmadd...). You can check Windows executables in the same way (objdump) but I don't have Premiere to check specifically.

You could grab a Windows executable of objdump or if you must know just send me the Windows exe.
Click to expand...

What would the command be in objdump to check?
 
Bonjour said:
Really like the look of the Gigabyte AM4s. Waiting to hear how they shape up..
Click to expand...

I only have the gaming 3 and if the quality is the same, it should be a solid board. Since building this on the 4th it's been solid. At some point when the distribution issues end I shall be grabbing myself a k5 or k7.
 
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