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Old 09-30-2017, 10:32 AM   #1
zvit
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Default i9 7900X\7920X OC 240mm vs 280mm radiator

I still haven't decided if I'm going with 7900 or 7920 so my question is for both.

I am getting a corsair crystal 570x which states that only a 240mm radiator can go on top. (280 can go only on front - but I REALLY want it on top).
So that would mean getting the H100i v2 (240mm) and not the two 280mm ones (H110i, H115i)

I'm planing on overclocking the CPU to the max turbo which is the same on the 7900 and 7920 = 4.3 GHz.

So my question is, will the H100i v2 be enough to overclock the i9 7900X and i9 7920X to 4.3 GHz? (I'd also be happy with anything in between 4.0 - 4.3)
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Old 09-30-2017, 04:35 PM   #2
Bassman
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Hello,

I just built one of these systems and have a Corsair H110 R 280mm water cooler on the top of my case. Jerry recommended I setup a push/pull with 4 fans on the radiator but my case is not large enough. So instead of buying a new case and a new water cooler, I decided to put the money towards buying a binned and delidded CPU. This is where the internal thermal paste in the CPU is replaced with a better conductive material. The CPU was tested to be able to run at 4.6GHz so it is a decent thermal performer. Less warranty but less heat. This CPU does run hot but your targets are within reach.

I am running 4.3GHz on all cores with two at 4.6GHz. This is running at a voltage of 1.17 (which is pretty low compared to other overclocks I have seen). I did have to lower the AVX settings to get this speed to work or the temps go too high during encoding.

As for the CPU performance, I think it is great. I have one hiccup with the codec I shoot with (AVC-Ultra 10bit 4:2:2) but that might be addressed with an Edius software fix. The memory cache levels for this chip are a bit low for video editing compared to previous Intel chips. So that is kind of a disappointment. But the previous 10 core Intel chip costs $700 more than this CPU.

Overall very happy, definite step up from my 4790 but not life changing as we all hope!
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Old 09-30-2017, 05:01 PM   #3
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A 280mm radiator on push pull would be my smallest recommended AIO for the 7900x. When Corsair releases it's 360mm AIO, that would be my preference with a push pull setup as well.
It's also not just the push pull setup but the quality of the SP fans used. I would replace the Corsair SP fans with a more efficient SP fan brand (Phanteks, Noctua, and Noiseblocker).

The nice thing with the 360mm is the minimal fan noise.
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Last edited by Jerry; 09-30-2017 at 05:29 PM.
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Old 09-30-2017, 06:39 PM   #4
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While I am very pleased with my 7900x, I would consider the upcoming 6 core chip depending on your workflow needs. Six cores at a likely 4.5-4.8 overclock might be pretty decent for only $400. Plus the chip has 12MB of cache which is not too far away from the 7900x. Just a thought.
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Old 09-30-2017, 06:41 PM   #5
Ron Evans
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Quote:
Originally Posted by Bassman View Post

Overall very happy, definite step up from my 4790 but not life changing as we all hope!
Yes for me I need a noticeable improvement from my 4790 to spend a lot of money. At the moment for editing my source files the 8700K is starting to look more attractive. Looks like I could do my usual upgrade of cpu, motherboard and memory maybe around $800. The option is likely more like $3500 for a new system if I go the route of Intel or AMD since that would also require a GPU and new cooling from what I have now. If EDIUS could use a fast GPU like it does Quicksync that may make a difference.
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Old 09-30-2017, 06:58 PM   #6
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Ice Lake and Tiger Lake chips should show some major changes. One is an internal voltage regulator. These chips should start to manhandle 4K content.
These are still 2 years off.

The 8700k should be a nice interim update from the 4790k. But, the chip will need to overclocked to get anything out of it.
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Main System: Azrock Z97 Extreme 6, 4790K@4.7Ghz, 32gb ram, Corsair H110, Win10 Pro 64, Samsung 850 pro, E7.5/8.5/E9 on separate SSD drives, HD Spark, Intensity Shuttle, 12tb RAID 0 on backplane ,2 BD, Benq 27 and Hanns-G 28 monitors, CC 2019, GTX 1080ti SC Black.
Both systems on Gigabit network
Second System: EditHD Ultimax-i7, X58, 980x@3.74, Corsair H80, Win764, 24gb ram, Storm 3g, Samsung 840 Pro 256, 4tb and 6tb RAID 0 on backplane, GTX 980ti Classified, Edius 9, Apple 30", Samsung 24", dual BD.
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Old 09-30-2017, 07:21 PM   #7
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Quote:
Originally Posted by Jerry View Post
Ice Lake and Tiger Lake chips should show some major changes. One is an internal voltage regulator. These chips should start to manhandle 4K content.
These are still 2 years off.

The 8700k should be a nice interim update from the 4790k. But, the chip will need to overclocked to get anything out of it.
Overclocked a little with 50% more cores and an improved GPU should be a noticeable improvement over the 4790. That may make more sense and spend more money on things like the Inferno etc to get better source files. As new cameras come out with HLG then changing my cameras may be a better choice over marginal changes to workflow at great expense !!!
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Threadripper 1920 stock clock 3.7, Gigabyte Designare X399 MB, 32G G.Skill 3200CL14, 500G M.2 SATA OS, 500G EVO 850 temp. 1T EVO 850 render, 6T Source, 2 x 1T NVME, MSI 1080Ti 11G , EVGA 850 G2, LG BLuray Burner, BM IP4K, WIN10 Pro

ASUS PB328 monitor, BenQ BL2711U 4K preview monitor, EDIUS 9.5 WG, Vegas 17, Resolve Studio 16


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Old 09-30-2017, 07:30 PM   #8
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The chip is 3.7GHz stock. The 4790k is 4.0GHz stock. Without proper cooling just a little overclock would not impress me. I'm at 4.7GHz on all 4 cores now with the 4790k. If the 8700k can do 4.8GHz on all 6, it would be useful to me. Otherwise, I'll keep looking.
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Windows 10 Pro up to v.1803 Tweaks for Edius Users
http://sgdvtutorials.com/WIN%2010%20...%20V.2.0.0.pdf

Main System: Azrock Z97 Extreme 6, 4790K@4.7Ghz, 32gb ram, Corsair H110, Win10 Pro 64, Samsung 850 pro, E7.5/8.5/E9 on separate SSD drives, HD Spark, Intensity Shuttle, 12tb RAID 0 on backplane ,2 BD, Benq 27 and Hanns-G 28 monitors, CC 2019, GTX 1080ti SC Black.
Both systems on Gigabit network
Second System: EditHD Ultimax-i7, X58, 980x@3.74, Corsair H80, Win764, 24gb ram, Storm 3g, Samsung 840 Pro 256, 4tb and 6tb RAID 0 on backplane, GTX 980ti Classified, Edius 9, Apple 30", Samsung 24", dual BD.
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Old 09-30-2017, 07:53 PM   #9
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I have my 4790 running 4.2 as tht is what the automatic Gigabyte tuning takes it to with no effort on my part. I have not pushed it any more. Likely my Corsair water cooler will manage.
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Threadripper 1920 stock clock 3.7, Gigabyte Designare X399 MB, 32G G.Skill 3200CL14, 500G M.2 SATA OS, 500G EVO 850 temp. 1T EVO 850 render, 6T Source, 2 x 1T NVME, MSI 1080Ti 11G , EVGA 850 G2, LG BLuray Burner, BM IP4K, WIN10 Pro

ASUS PB328 monitor, BenQ BL2711U 4K preview monitor, EDIUS 9.5 WG, Vegas 17, Resolve Studio 16


Cameras: GH5S, GH5, FDR-AX100, FDR-AX53, DJI OSMO Pocket, Atomos Ninja V x 2
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Old 09-30-2017, 08:01 PM   #10
Jerry
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That is more likely a turbo setting rather than a hard overclock.
There is a difference.
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If you own the Tutorials and you need help, PM me.

Vistitle YouTube Channel
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Windows 10 Pro up to v.1803 Tweaks for Edius Users
http://sgdvtutorials.com/WIN%2010%20...%20V.2.0.0.pdf

Main System: Azrock Z97 Extreme 6, 4790K@4.7Ghz, 32gb ram, Corsair H110, Win10 Pro 64, Samsung 850 pro, E7.5/8.5/E9 on separate SSD drives, HD Spark, Intensity Shuttle, 12tb RAID 0 on backplane ,2 BD, Benq 27 and Hanns-G 28 monitors, CC 2019, GTX 1080ti SC Black.
Both systems on Gigabit network
Second System: EditHD Ultimax-i7, X58, 980x@3.74, Corsair H80, Win764, 24gb ram, Storm 3g, Samsung 840 Pro 256, 4tb and 6tb RAID 0 on backplane, GTX 980ti Classified, Edius 9, Apple 30", Samsung 24", dual BD.
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