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16GB (2x8GB) Patriot Viper Steel DDR4 4400 Desktop Memory EXPIRED

$115
+ Free Shipping
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Newegg.com has 16GB (2x8GB) Patriot Viper Steel DDR4 4400 Desktop Memory (PVS416G440C9K) for $114.99. Shipping is free. Thanks SDBuddy

Specs:
  • Timing 19-19-19-39
  • CAS Latency 19
  • Voltage 1.45V
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Original Post

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Edited August 13, 2020 at 01:02 PM by
Newegg has the 16GB Patriot Viper Steel 4400 kit [newegg.com] for $115 + Free Shipping.

Very popular overclockers' kit. I have this kit. Easily can do 3800 CL16 or better on Ryzen with FCLK at 1900Mhz (1:1 with memclock), and with tight sub timings. Usually $130+ when available, and usual sale price is $125, rarely less than that. Currently OOS at Amazon, $155 at B&H.

It's quality B-die. Finder link here [github.io]. Can achieve very low latency and high bandwidth.
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#16
I can confirm this ram kit is amazing. I tightened my timings the second I got the kit and ended up with 4400mhz cl17 literally by just changing the numbers in the bios nothing else.

I also go it stable at 3800mhz cL14

This was all done on a 10900k

If you want a bad ass kit of b die for cheap and don't care about rgb this is it chief
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#17
Thanks OP in for one.
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#18
I have a 1st gen ryzen7 currently running Corsair vengeance pc3200 sticks since new. They've never ran anywhere near their rated speeds, won't boot using the SPD settings in bios etc. The PC is rock solid however defaulting to whatever lower speed it is (I forget). Is it worth dumping money into memory in this scenario? I was researching b die sticks months ago but never pulled the trigger.
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#19
Quote from capplanet2704
:
While many benchmarks out there say better speeds and timings are needed for "better" gaming. In real world usage, it not very noticeble vs 3200. It's like buying a faster car to improve your morning commute; Yes your car is faster, but with an actual commute and traffic, you gain nothing from having a faster car (marginally).

Like others said, spend the money on a better GPU.
I wish my car had a GPU.
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#20
In for 2! Thanks OP! Killer deal! Going to try my hand at tweaking this ram with my 3900x.
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#21
Quote from dfgremlin
:
I wish my car had a GPU.
Get a Tesla.
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#22
Quote from nate.lee.munk
:
I just bought a car with 220 more HP than my last car.. its 100% worth it.
So you accelerate faster....to go the speed limit, and get to the same light i end up at, first... Congrats
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#23
Quote from ChristopherJ26
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So you accelerate faster....to go the speed limit, and get to the same light i end up at, first... Congrats
Some people enjoy driving. It's obvious you do not.

Some people live in the country and don't have traffic lights.

Some (most) people don't strictly adhere to the speed limit.

Some places don't have speed limits.

Some people do autocross.

Then, there's you, who does none of these things, and resents everyone else for it.
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#24
See alot of questions here about B die and what to buy.

There are only 3 RAM manufacturers in the world. Samsung, SK Hynix, and Micron/crucial.

B-Die is made Samsung. It's their highest performing RAM. Most people say B-Die is the fastest RAM you can buy. Most people are probably right.

B-Die can easily be identified by timings. If the first three timings are the same number its probably B Die. For example 14-14-14 3200mhz is b die. 16-16-16 3600mhz is b die. Not coincidently the true speed of this RAM is actually the same... Clocking in right at 9 nanoseconds. Not surprisingly, it's basically the same RAM.

This is a highly binned, overclocked, "high performance" set... Clocking at some of the highest MHZ on the market, at tight timings.

Yes RAM performance can make a difference, but beyond 3200mhz there is diminishing returns (little to no improvement for Intel). And for some reason, RAM this high speed does not always equate to better performance.

Should you buy this RAM?

I personally would not. It can be debated if the 1.45V is too high of voltage. Especially it has been argued if the higher voltage can damage intel's memory controller over time.

Disclaimer: yes I have researched this quite a bit, but not recently. I would personally check if the voltage was compatible with both my motherboard and recommended for the selected CPU as well.

Default of Intel used to be 1.35V. It probably still is but I haven't checked it. 1.45V this requires will be a full. 10V higher than recommended which is significant.

Bonus tip: the first time you boot this will not run at rated speeds. You will have to go into BIOS to enable the overclocked speed.
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#25
Quote from peterpecher
:
This is CL19
But it is B-die.
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#26
Quote from nzalog
:
If anyone is curious, this comes out to 8.64 nanoseconds latency.
(19/4400*2000)
Correct. For others, note that the 8.64ns that's a read latency involving only a portion of the command workflow, from opening up the row into the sense amplifiers and accessing the first bit of data, and not the additional time for precharing, recharging, switching from RD to WR or vice versa, or between banks, etc.

Also on Ryzen, on XMP (which includes GearDownMode enabled), it will round up tCL from 19 to 20. This makes the latency 9.09ns. You don't want to run that anyway, because while your memory clock is at 2200Mhz , the infinity fabric clock (fclk) will run at half speed, 1100Mhz. This impacts the speed of the interconnect between the cores, and from the CPU to PCIe (storage and GPU), USB, and sound periphs. AMD states about a 9ns overall read latency penalty. From somewhere in the mid to high 60s to mid to high 70s. (ouch!)

The goal is to run it at speeds like 3600 CL14 (7.78ns) or 3800 CL16 (8.42ns) or better. With higher memclock, and forcing 1:1 with FCLK, you get intercore latency reduction and bandwidth increase, which is valuable even if the read latency part of 8.42 might look slightly higher.

Quote from stmurphy360
:
I was told these could clock to 3600 cl 14, but it caused crashes. Was able to get it to 3600 cl 16 though.
It's not easy. I got this kit doing 3600 14-14-14-14-28-42 with tRFC 336. I tightened all other subtimings as well. Then I moved up to 3800.

Quote from peterpecher
:
This is CL19
But, you wouldn't run that anyway, at least on Ryzen. You'd OC these with tight subtimings. See above.

Quote from Kambrodian
:
I can confirm this ram kit is amazing. I tightened my timings the second I got the kit and ended up with 4400mhz cl17 literally by just changing the numbers in the bios nothing else.

I also go it stable at 3800mhz cL14

This was all done on a 10900k

If you want a bad ass kit of b die for cheap and don't care about rgb this is it chief
Nice job! You probably know, but for others -- note that if you leave subtimings on auto, and only change a few, you will find some major negative auto-settings on your subtimings, and possibly undermining the point of going to 3800. You'll get some very long pre-charge (tRP), refresh cycle (tRC and tRFC) settings, and probably much higher tRDWR/tWRRD to make up for instability and lack of manual tuning. Only way to know is to benchmark to see what happened. Aida64 is fine, but also running SiSoftware Sandra Multi-Core efficiency test to look at its latency and intercore bandwidth #s. You're on Intel so you don't have the same Ryzen challenges.

Quote from Lordship
:
16-16-16 3600mhz is b die.

It can be debated if the 1.45V is too high of voltage.
Great info in your post, it's a good read for everyone. On these two points though. There are 3600 MT/s CL16 kits that are not b-die. And B die scales well with voltage up to 1.5V at which you are probably pushing voltage hard for reduced benefits due to increased heat which will add instability. Sadly, unlike some RAM kits, this Viper Steel kit has no temp sensors so you won't be able to monitor from HWInfo64. But one may encounter errors surfacing in TestMem5 stress testing (with 1usmus v3 config, on 20 cycles) after about 30-60 mins. (useful to mem stress test to prove stability)
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Last edited by SDBuddy August 13, 2020 at 06:53 PM.
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#27
These memory tops out at 4600 or 3800 CL14-16-16-27-40 @1.5v

Samsung B-Die can handle 1.8v if anyone is wondering. I wouldn't do that 24/7 besides benchmarks. 1.5v is safe all day long.
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#28
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#29
Great kit. Two sets of these would also be good for 32GB on a T-topology board such as Asus, but you would probably have to manually tune them.

https://www.youtube.com/watch?v=KiCH2Lq9DcA
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#30
Quote from kindredice
:
My 3600 cl17 RGB b-die kit can do 3600 c14-15-15 1T with 1.45v. I just ordered these 4400 c19s and they better do at least 3733 c14 1T. Your motherboard and CPU's memory controller play a role too. I mainly got these to be ready for Ryzen 4000 series since more than likely they will support 4000+ memory clocks.
Tomahawk 450max and ryzen 3600. Typical build it seems. Good luck
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