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Thread: Intel Broadwell-C (5675C/5775C) Ownership Club Reply to Thread
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  Topic Review (Newest First)
03-22-2020 09:19 PM
TwilightRavens Woot got it switched over finally, first linux pc i've had with actual gaming capable parts.
03-20-2020 10:53 PM
TwilightRavens i7-5775C and ASUS Z97-E have officially been retired for now, just finished disassembling the last bit of it. Gave the board a good 91% isopropyl alcohol bath and I am going to let it dry out for a few days. I did inspect the board and nothing is physically wrong with it so maybe it just needed to be cleaned, I even sprayed the RAM slots really well. I did however try a few other DDR3 kits I had laying around and none of them would attempt to post when I loaded their XMP profiles so that has to be something wrong with it from the factory because it’s always just not let me load XMP regardless of the kit or density.

Planning to do a rebuild on it sometime in the near future so you guys haven’t heard the last of me yet, but since I finally made the jump to Ryzen, this pc is just not my main focal point anymore. Not entirely sure what I want to turn it into but I have been bouncing a few ideas around in my head.

I do know it will be running Ubuntu 20.04 after it releases but i’m not sure what video card I want to give it (if any), leaning towards the GTX 660 to make it just a light gaming machine but I may grab something like a GTX 1650 super or something lower power like that. The spares that will just be laying around are EVGA GTX 660 SC ACX 2.0, EVGA GTX 1080 SC, MSI R9 380 Gaming 4G, MSI R9 290X Gaming (no cooler for it at the moment, might go Morpheus II in the future) or see If I can get my 2 x4GB G.Skill TridentX to run at its rated 2133MHz and just run an overclocked Iris Pro 6200. I may either throw it in my Fractal Design Focus G case, which originally housed my LGA 775 build that was just for screwing around with before the board died, or my Lian Li open air test bench. Like I said lots of ideas bouncing around with no real clear vision going forward.
03-20-2020 06:22 PM
Groove2013 Also have seen that frametimes are lower and also more stable (flatter curve) with R9 3900X vs. i9-9900K(S), despite slightly lower FPS.
03-20-2020 06:19 PM
TwilightRavens
Quote: Originally Posted by Groove2013 View Post
Also don't forget that games that aren't well multi-threaded, like Tarkov, Squad etc don't care if you have a higher physics score in synthetic benchmark that is very well multi-threaded.
It's just synthetics - no real world numbers/usage.

Surre, games like BF, Witcher, GTA V will like it.
Was using one of the games I normally play (FFXIV) on my 5775C it would peg all 8 threads in busy areas and barely maintain 60 fps, meanwhile on the 3900X it managed to stay over 100 fps while only utilizing 4 threads mostly with a tiny bit of load on other threads.
03-20-2020 06:14 PM
kithylin
Quote: Originally Posted by Groove2013 View Post
@TwilightRavens cache bandwidth is not insane at all!
Dont forget to divide the number you see by number of threads to get GB/s per thread!
Do same for your i7-5775C.

3050 GB/s read/copy divided by 24 threads is only 127 GB/s per thread.

~1050 GB/s read/copy on my i7-5775C divided by 8 threads is 131.25 GB/s per thread.

L2 is also per thread.
Only L3 and L4 are common and not per thread.

It's actually possible to OC your Samsung B-Die sticks to 3733/3800 to CL14/15 and drop the latency to like 63-65 ns.
15-14-14, 15-14-15 or 15-15-15.
1.45 V for Samsung B-Die is really ok.
More Expensive Samsung B-Die sticks are sold with factory 1.5 V for super high frequencies and tight timings.
During the AIDA64 CPU Tests the CPU usage will jump to 100% on all threads when running this test. It's a multi-core test that utilizes the -ENTIRE- processor. There is no "Division" and there is no "Divide by threads". It's a resulting static number. Click button. Run test. Compare number. It's not rocket science. As long as both computers are running the exact same version of AIDA64 and doing the same test then nothing matters except the resulting number that is produced in the end.
03-20-2020 06:14 PM
Groove2013 Also don't forget that games that aren't well multi-threaded, like Tarkov, Squad etc don't care if you have a higher physics score in synthetic benchmark that is very well multi-threaded.
It's just synthetics - no real world numbers/usage.

Surre, games like BF, Witcher, GTA V will like it.
03-20-2020 06:12 PM
TwilightRavens
Quote: Originally Posted by Groove2013 View Post
@TwilightRavens cache bandwidth is not insane at all!
Dont forget to divide the number you see by number of threads to get GB/s per thread!
Do same for your i7-5775C.

3050 GB/s read/copy divided by 24 threads is only 127 GB/s per thread.

~1050 GB/s read/copy on my i7-5775C divided by 8 threads is 131.25 GB/s per thread.

L2 is also per thread.
Only L3 and L4 are common and not per thread.

It's actually possible to OC your Samsung B-Die sticks to 3733/3800 to CL14/15 and drop the latency to like 63-65 ns.
15-14-14, 15-14-15 or 15-15-15.
1.45 V for Samsung B-Die is really ok.
More Expensive Samsung B-Die sticks are sold with factory 1.5 V for super high frequencies and tight timings.
Pretty sure the L1/L2 aren't that way on Zen2, its all inclusive, L3 would be divided by 2 since each chiplet has half of the total L3. Also I'm not going for the bleeding edge like I had to with my Broadwell, 3733MHz on XMP 3600MHz with 1.35v is plenty for me especially with a 1:1 RAM:FCLK and coming from 4C/8T i7 to a 12C/24T R9.
03-20-2020 05:27 PM
Groove2013 @TwilightRavens cache bandwidth is not insane at all!
Dont forget to divide the number you see by number of threads to get GB/s per thread!
Do same for your i7-5775C.

3050 GB/s read/copy divided by 24 threads is only 127 GB/s per thread.

~1050 GB/s read/copy on my i7-5775C divided by 8 threads is 131.25 GB/s per thread.

L2 is also per thread.
Only L3 and L4 are common and not per thread.

It's actually possible to OC your Samsung B-Die sticks to 3733/3800 to CL14/15 and drop the latency to like 63-65 ns.
15-14-14, 15-14-15 or 15-15-15.
1.45 V for Samsung B-Die is really ok.
More Expensive Samsung B-Die sticks are sold with factory 1.5 V for super high frequencies and tight timings.
03-19-2020 10:05 PM
TwilightRavens
Quote: Originally Posted by BlownGUNSLINGER View Post
the best way to tell a difference in systems' performance is using the other benchmark named "Sky Diver". It is a better representation of most video games. However with the very latest triple A (AAA) titles it seems like standard "Fire Strike" is maybe just as good of representation of performance. The latest AAA games are so multi-threaded, high framerates are difficult to achieve. Most high-end system get a 100 frames, and do not reach that 144fps mark. Might be a result of the "simulation thread".

on the "Sky Diver" benchmark the combined test is a good comparison to CPU/GPU performance. Additionally, the physics test shows how many threads were being used at the time, along with the relative FPS. It shows results for 8/24/48/96 threads. So they are all multiples of 12c/24t. I actually use the physics benchmark for testing thermal(s) on my CPU.
I'm also shocked at the performance of the Iris Pro 6200, I moved my 1080 to my X570 for now until my 1080 ti gets delivered and I said screw it and decided to try gaming on the iGPU and it wasn't terrible all things considered.

Also the cache speeds along with the RAM speeds are freaking insane on this chip holy hell.
03-19-2020 09:45 PM
BlownGUNSLINGER the best way to tell a difference in systems' performance is using the other benchmark named "Sky Diver". It is a better representation of most video games. However with the very latest triple A (AAA) titles it seems like standard "Fire Strike" is maybe just as good of representation of performance. The latest AAA games are so multi-threaded, high framerates are difficult to achieve. Most high-end system get a 100 frames, and do not reach that 144fps mark. Might be a result of the "simulation thread".

on the "Sky Diver" benchmark the combined test is a good comparison to CPU/GPU performance. Additionally, the physics test shows how many threads were being used at the time, along with the relative FPS. It shows results for 8/24/48/96 threads. So they are all multiples of 12c/24t. I actually use the physics benchmark for testing thermal(s) on my CPU.
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