RAM voltage 1.43?
RAM voltage 1.43?
Hi,
I'm using an AMD 2200G with a MSI B350i board. I'm currently testing my HyperX Fury 2x4GB at 3400 CL14 timings and had to increase the voltage to 1.43 volts for stability. Some sources suggest it's okay to go up to 1.45 volts, but I'm seeking advice from the community before proceeding. These memory sticks are Micron B die, Rank 1. Any suggestions would be helpful.
A lot of it is outright guesswork, with too many variables to list.
Some round-about logic.
1. XMP2.0 (Intel) allows an absolute max of 1.5V for certification, with preference for 1.35V or less.
2. The faster kits (3200MHz) that appear on the QVL for the board, all do 3200MHz @ 1.35V.
https://www.msi.com/Motherboard/support/...ort-mem-13
http://www.savewaytech.com/product/avexi...08g-2bz1gy
https://www.amazon.ca/Corsair-Vengeance-...B0143UM4TC
Personally, I think 1.43V is pretty high. IIRC, the max recommended voltage for Ryzen APUs* is 1.25-1.3V for SOC depending on the source.
You're pushing >1.4V through the IMC, part of the chip...
A lot of it is outright guesswork, with too many variables to list.
Some round-about logic.
1. XMP2.0 (Intel) allows an absolute max of 1.5V for certification, with preference for 1.35V or less.
2. The faster kits (3200MHz) that appear on the QVL for the board, all do 3200MHz @ 1.35V.
https://www.msi.com/Motherboard/support/...ort-mem-13
http://www.savewaytech.com/product/avexi...08g-2bz1gy
https://www.amazon.ca/Corsair-Vengeance-...B0143UM4TC
Personally, I think 1.43V is pretty high. IIRC, the max recommended voltage for Ryzen APUs* is 1.25-1.3V for SOC depending on the source.
You're pushing >1.4V through the IMC, part of the chip itself.
If the CPU/GPU aspect isn't recommended for >1.3V, even the 1.35V of rated kits is likely pushing it.
What is your HyperX kit rated at, stock? If it can do 2966-3200MHz @ 1.35V, I'd leave it alone. The performance gains would be (relatively) minimal, and extremely unlikely to be worth the risk... however small.
*Remember, the Ryzen 1X00 series, 2X00 series and the APUs 2X00G/E have different variables. I believe the 1x00 and 2x00 chips are relatively "safe" at up to 1.4V, but the APUs are definitely lower - likely due to the presence of the GPU aspect on the chip too.
It's a notable point. With just one CCX in APUs, they're handling memory duties differently than the dual CCX setup on Ryzen chips.
Barty1884 :
A lot of it is outright guesswork, with too many variables to list.
Some round-about logic.
1. XMP2.0 (Intel) allows an absolute max of 1.5V for certification, with preference for 1.35V or less.
2. The faster kits (3200MHz) that appear on the QVL for the board, all do 3200MHz @ 1.35V.
https://www.msi.com/Motherboard/support/...ort-mem-13
http://www.savewaytech.com/product/avexi...08g-2bz1gy
https://www.amazon.ca/Corsair-Vengeance-...B0143UM4TC
Personally, I think 1.43V is pretty high. IIRC, the max recommended voltage for Ryzen APUs* is 1.25-1.3V for SOC depending on the source.
You're pushing >1.4V through the IMC, part of the chip itself.
If the CPU/GPU aspect isn't recommended for >1.3V, even the 1.35V of rated kits is likely pushing it.
What is your HyperX kit rated at, stock? If it can do 2966-3200MHz @ 1.35V, I'd leave it alone. The performance gains would be (relatively) minimal, and extremely unlikely to be worth the risk... however small.
*Remember, the Ryzen 1X00 series, 2X00 series and the APUs 2X00G/E have different variables. I believe the 1x00 and 2x00 chips are relatively "safe" at up to 1.4V, but the APUs are definitely lower - likely due to the presence of the GPU aspect on the chip too.
Thanks for your reply. The website and spec sheet say nothing other than 1.2 volts.
https://www.hyperxgaming.com/us/memory/f...6C15FBK2/8
(2666 CL15, 4GB, Kit of 2, Black)
My SOC voltage is set to 1.2 volts and remains there according to HW monitor (I read maximums for this range between 1.2 and 1.25V)
I could lower timings to 3400 CL16 and correspondingly lower voltage to 1.39 volts. However if 1.35 is a hard safe limit I guess I'll have to compromise further.
According to Passmark at least, I do see around a 5% performance gain moving from 3200 CL16 to 3400 CL16, but no advantage moving to 3400 CL14. I suspect this is because my CPU bottlenecks the system clocked at only 3400 MHz (to keep temperatures low in my SFF system).
Did you check the performance improvements of 3200 C14 compared to 3400 C16? You might find more success with slower speeds and more precise timing, as those APUs typically perform best around 3200. It's not that they don't reach it, but they tend to struggle without significant adjustments.
Did you check the improvements for 3200 C14 compared to 3400 C16? You might find more success with slower speeds and tighter settings, as those APUs tend to perform better at lower power levels. Not that they don't reach higher speeds, just seems they prefer it without major adjustments.
I discovered some information a few years back while working with ddr3. I wish I could locate the documentation again. A hair speed of 2-3% is typical; 1866/10 performs better than 1600/9. 1600/8 is faster than 1866/10, and 2133/11 offers double the speed of 1600/9. 1600/7 is slightly quicker than 2133/10, and it’s also more expensive. For 1866/8, a price reduction to half would give similar performance by adjusting the primary timings. I run 1866/8 at around 1.51v, which isn’t much of a difference.
On the other hand, personally I didn’t notice any noticeable changes except in boot times. During loading, it displays a Windows 4 color flower that spirals upward. At regular speeds, the flower fully appears, but at 1866/8 it skips the final color. If performance was crucial for RAM usage, I might try pushing it further, but I don’t think a 2200G build would be ideal for such tasks. The extra 5% boost is mainly seen in benchmarks; in real use, it’s not that significant. In games, you’d likely see only about 2-3 fps at best between minimum and maximum frames, which are just limits rather than actual gameplay speeds.
I get the urge to push a PC as hard as possible, but eventually diminishing returns become more noticeable than the effort involved.
I suppose it's because this is quite a small build with limitations due to thermals (build image
here
). I've had to downclock the CPU to 3.4GHz to minimize temperatures. These were also the cheapest 8GB kit I could find on the market here.
So it has been personally interesting to me try to push the memory as far as possible in order to benchmark better and compensate for CPU frequency loss. It is surprising that these can be pushed (seemingly stably) to such high frequencies from the stock 2666. I understand that real world performance may be marginal, but this is for science.
I have discovered that playing TF2 is an excellent litmus test to check RAM stability, more so than running AID64 and Prime 95 blend for 30 mins, Unigine Heaven or Passmark. All of the above may give me a clean bill of health but 5 mins of TF2 and all sorts of errors crop up.
Anyway, I'm trying 3333 CL16, 1.36V now - I've been squeezing the voltages down. TF2 approves. Next stop, 1.35V, followed by 3400 CL16 at slightly looser timings.
Thanks for all your help!
Beyond the price, Kingston ram isn't particularly inexpensive. It offers solid reliability, great compatibility, and its performance matches that of higher-end brands, which usually come with a premium price for better cooling solutions. The specifics often depend on the OEM, especially when it comes to Ryzen processors that were historically known for their issues.