Unfortunately, this deal is no longer available
Viper Steel Series DDR4 16GB (2 x 8GB) 4000MHz Performance Memory Kit - £79.11 at Amazon
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Viper Steel Series DDR4 16GB (2 x 8GB) 4000MHz Performance Memory Kit - £79.11 at Amazon

£79.11£879%Amazon Deals
Expert (Beta)35
Expert (Beta)
Posted 21st JanEdited by:"Tacavas"

This deal is expired. Here are some options that might interest you:

Excellent memory for the money. Temporarily out of stock.

Key Features:
  • Voltage: 1.35V
  • Latency Timing: CL19
  • Speed: 4000MHz (PC4-32000)
  • 2 x 8GB DIMM Dual Channel Kit
  • Intel XMP Profile Support
  • non-ECC Unbuffered Memory
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Lol timings
35 Comments
Lol timings
Qq12121221/01/2020 20:53

Lol timings


I'm quite sure "lol" isn't meant to precede the word or phrase that invokes it..
keenan31621/01/2020 21:01

I'm quite sure "lol" isn't meant to precede the word or phrase that …I'm quite sure "lol" isn't meant to precede the word or phrase that invokes it..


Lol pretty sure I don't care.
#YOLO
Qq12121221/01/2020 21:02

Lol pretty sure I don't care.#YOLO


My point exactly.. lol
Can an adult expand on the LOL YOLO timings?
Qq12121221/01/2020 20:53

Lol timings



Could you not decrease the frequency and push CAS 17? Would it not be possible to do 3600MHz C17 or 18 with this kit (only as reference because it becomes comparable with other kits).
anony_mous21/01/2020 21:13

Could you not decrease the frequency and push CAS 17? Would it not be …Could you not decrease the frequency and push CAS 17? Would it not be possible to do 3600MHz C17 or 18 with this kit (only as reference because it becomes comparable with other kits).


Or pay a little more for that ram
Used to get 32GB for £98 now it's 16GB for £79. It was 3000 or 3200MHz and not 4000MHz, but these price hikes are starting to get painful.
Timings are redundant now... They need to loosen them to get more speed. If I remember reading that correctly. Yes 4000 with tight timings would be better but the fact is 4000 is faster than 3000 with tight timings
backyard21/01/2020 22:26

Timings are redundant now... They need to loosen them to get more speed. …Timings are redundant now... They need to loosen them to get more speed. If I remember reading that correctly. Yes 4000 with tight timings would be better but the fact is 4000 is faster than 3000 with tight timings



Except it's not, running these at 4000 would decouple the 1:1 memory clock:infinity fabric ratio and give you significantly worse performance.

You'd be better off downclocking them to 3600 and going for C16, should be doable pretty easily and would give much better performance.
Edited by: "Roph" 21st Jan
Roph21/01/2020 22:34

Except it's not, running these at 4000 would decouple the 1:1 memory …Except it's not, running these at 4000 would decouple the 1:1 memory clock:infinity fabric ratio and give you significantly worse performance. You'd be better off downclocking them to 3600 and going for C16, should be doable pretty easily and would give much better performance.


Are You sure?
uk.crucial.com/gbr…ull
Edited by: "BergkampWonderland" 21st Jan
BergkampWonderland21/01/2020 23:17

Are You …Are You sure?https://uk.crucial.com/gbr/en/memory-performance-speed-latency?wgu=2600_116019_15796485833573_3095146cbd&wgexpiry=1582240583&cm_mmc=affiliation-_-null-_-null-_-null



Yeah that poster has something. I've seen it before iirc some well respected youtuber explaining it. The Crucial link does not cover AMD infinity fabric.

EDIT Gamers Nexus on youtube but cannot reacll which vid.


youtube.com/use…eos
Edited by: "Meathotukdeals" 21st Jan
anony_mous21/01/2020 21:13

Could you not decrease the frequency and push CAS 17? Would it not be …Could you not decrease the frequency and push CAS 17? Would it not be possible to do 3600MHz C17 or 18 with this kit (only as reference because it becomes comparable with other kits).


Because it's Samsung B-die, this kit will do CL16 @ 3600Mhz without breaking sweat. Timings as low as CL14 are possible.
Meathotukdeals21/01/2020 23:30

Yeah that poster has something. I've seen it before iirc some well …Yeah that poster has something. I've seen it before iirc some well respected youtuber explaining it. The Crucial link does not cover AMD infinity fabric.EDIT Gamers Nexus on youtube but cannot reacll which vid.https://www.youtube.com/user/GamersNexus/videos


Nice, i will check it tomorrow. Question is that expensive motherboard and expensive ram with low cl give us proper boost in games? Is this worth to spend extra £100-200?
BergkampWonderland22/01/2020 00:02

Nice, i will check it tomorrow. Question is that expensive motherboard …Nice, i will check it tomorrow. Question is that expensive motherboard and expensive ram with low cl give us proper boost in games? Is this worth to spend extra £100-200?



only you can value your own money and it's worth.
Meathotukdeals22/01/2020 00:03

only you can value your own money and it's worth.


Money is no problem, i just asking it will be 10-15% kick or even more?
BergkampWonderland22/01/2020 00:06

Money is no problem, i just asking it will be 10-15% kick or even more?


I don't play any games on PC.
BergkampWonderland22/01/2020 00:06

Money is no problem, i just asking it will be 10-15% kick or even more?


Properly tuned memory can give you a boost in games but it depends on the game, the CPU and etc. Here's a video from Hardware Unboxed that explains it quite well.

youtube.com/wat…63s

Applications are not as sensitive to memory timings and don't show much difference.
BergkampWonderland22/01/2020 00:11

What about other applications?


Don't know, was just agreeing that there is no problem oc with amd till this 1:1 ratio is hit. I just remember it was about 3600mhz and its probably why this so called ryzen sweetspot at 3600 exists where it does because it seems fundamentally important.
Edited by: "Meathotukdeals" 22nd Jan
CL19 Memory at 4000MHz has the same actual (measured in time) latency as CL15.2 Memory at 3200MHz.
PurplePerson22/01/2020 00:22

CL19 Memory at 4000MHz has the same actual (measured in time) latency as …CL19 Memory at 4000MHz has the same actual (measured in time) latency as CL15.2 Memory at 3200MHz.


And DDR2 1066 @ CL5 has the same latency as 3200 @ CL15, which is why Crucial say that speed is generally more important than latency.

A good video to watch is by Gamers Nexus:

youtube.com/wat…27s

3600 @ CL16 and 3200 @ CL14 are both in the test and the 3600 wins every time even though it's supposed to have the higher latency of the two.
Edited by: "rcom" 22nd Jan
rcom21/01/2020 23:58

Because it's Samsung B-die, this kit will do CL16 @ 3600Mhz without …Because it's Samsung B-die, this kit will do CL16 @ 3600Mhz without breaking sweat. Timings as low as CL14 are possible.


That was my point, the other guy was trying to be clever ‘lol timings’
anony_mous22/01/2020 08:10

That was my point, the other guy was trying to be clever ‘lol timings’


Sure, I wasn't trying to contradict you, just confirm that this RAM will do great timings at 3600, better than most that is actually clocked at 3600 by default. The downside is you have to manually enter all your timings to reach 3600 whereas 3600 memory just needs XMP enabled.
Edited by: "rcom" 22nd Jan
anony_mous22/01/2020 08:10

That was my point, the other guy was trying to be clever ‘lol timings’


A good way to explain it is that performance is dependent on the memory bandwidth which grows with frequency and a latency. latency = timing/frequency so a higher timing with a higher frequency results in the same latency as a lower frequency with a lower timing so 4000 c19 is actually pretty good.
sysak22/01/2020 09:17

A good way to explain it is that performance is dependent on the memory …A good way to explain it is that performance is dependent on the memory bandwidth which grows with frequency and a latency. latency = timing/frequency so a higher timing with a higher frequency results in the same latency as a lower frequency with a lower timing so 4000 c19 is actually pretty good.


I know about latency. I was just bringing up the point that given the effort, there is probably more headroom for altercations on frequency/infinity fabric/tightening timings on this than say an equivalent latency. Then again it will vary by application where some may benefit from tighter timings.
Roph21/01/2020 22:34

Except it's not, running these at 4000 would decouple the 1:1 memory …Except it's not, running these at 4000 would decouple the 1:1 memory clock:infinity fabric ratio and give you significantly worse performance. You'd be better off downclocking them to 3600 and going for C16, should be doable pretty easily and would give much better performance.


i have these, in both 4000, and 3600 kits. They would not even hit rated speeds. tried everything. 2nd gen an 3rd gen ryzen, 3600 would only run at 3000, 4000 wouldnt get close to 3600, tried voltage, timings etc. bios updats. even on an intel board with an i5 9400f nope. common issue with this series.

forums.tomshardware.com/thr…05/
Aj_KNYT22/01/2020 10:37

i have these, in both 4000, and 3600 kits. They would not even hit rated …i have these, in both 4000, and 3600 kits. They would not even hit rated speeds. tried everything. 2nd gen an 3rd gen ryzen, 3600 would only run at 3000, 4000 wouldnt get close to 3600, tried voltage, timings etc. bios updats. even on an intel board with an i5 9400f nope. common issue with this series.https://forums.tomshardware.com/threads/16gb-ddr4-3200mhz-patriot-viper-steel-not-achieving-rated-speeds.3517505/


I've got 4000 and 3200. The 3200 is currently running 2933 on an ITX system, probably a motherboard restriction on that one. The 4000 runs at 4000, 3800, 3733 or 3600 with ease on X570. I looked on OCUK forums before Xmas and most people get very good Mhz/timings with these, so I wouldn't go as far as a "common" problem.
Cheap B-Die kit according to this list docs.google.com/doc…dit

I have the 4400 Viper kit running at CL14 3600 @1.47v.

Only gripe is that there's no on-board temp sensor.
rcom22/01/2020 00:54

And DDR2 1066 @ CL5 has the same latency as 3200 @ CL15, which is why …And DDR2 1066 @ CL5 has the same latency as 3200 @ CL15, which is why Crucial say that speed is generally more important than latency.A good video to watch is by Gamers Nexus:https://www.youtube.com/watch?v=9IY_KlkQK1Q&t=1327s3600 @ CL16 and 3200 @ CL14 are both in the test and the 3600 wins every time even though it's supposed to have the higher latency of the two.



@BergkampWonderland I think this is the video I was thinking about.
Got this RAM.... running 3800c16-15-15-21...@1.36V
with my 3900x.. IF @ 1900...Maybe I'm late, but this kit is perfect for Ryzen2 (Builzoid advice )
Edited by: "Stincky_Boar" 24th Jan
Aj_KNYT22/01/2020 10:37

i have these, in both 4000, and 3600 kits. They would not even hit rated …i have these, in both 4000, and 3600 kits. They would not even hit rated speeds. tried everything. 2nd gen an 3rd gen ryzen, 3600 would only run at 3000, 4000 wouldnt get close to 3600, tried voltage, timings etc. bios updats. even on an intel board with an i5 9400f nope. common issue with this series.https://forums.tomshardware.com/threads/16gb-ddr4-3200mhz-patriot-viper-steel-not-achieving-rated-speeds.3517505/


Send it back for RMA . .
Stincky_Boar24/01/2020 15:12

Send it back for RMA . .

both stick pass a full 24hr mestest and are stable, just a poor batch i think, maybe some of you guys had better luck on the silicon lottery.
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