Underperforming cooler?

[Pastorcasper 2.0]

Alrighty, so I just upgraded to the Dark Rock Pro 4 from Be Quit, and I feel like the temps are a bit high

PCPartPicker Part List

Type	Item	Price
CPU	Intel Core i7-3770K 3.5 GHz Quad-Core Processor	$449.99 @ Amazon
CPU Cooler	be quiet! Dark Rock Pro 4 50.5 CFM CPU Cooler	$89.90 @ Amazon
Motherboard	Asus P8Z77-V LE ATX LGA1155 Motherboard
Memory	G.Skill Sniper Series 8 GB (2 x 4 GB) DDR3-1600 Memory
Memory	G.Skill Sniper Series 8 GB (2 x 4 GB) DDR3-1600 Memory
Storage	Crucial MX500 500 GB 2.5" Solid State Drive	$69.95 @ Amazon
Storage	Western Digital Caviar Blue 320 GB 3.5" 7200RPM Internal Hard Drive	$16.98 @ Amazon
Video Card	Sapphire Radeon RX 580 8 GB NITRO+ Video Card	$404.99 @ Amazon
Case	Zalman Z9 Plus ATX Mid Tower Case
Power Supply	Corsair CXM V2 (2017) 750 W 80+ Bronze Certified Semi-modular ATX Power Supply
	Prices include shipping, taxes, rebates, and discounts
	Total	$1031.81
	Generated by PCPartPicker 2020-05-17 19:38 EDT-0400

Heres my parts list, and the CPU is currently OC'd to 4.1Ghz. The temps under relatively same conditions are a bit better than my old Reeven chronos guard cooler, but I was expecting a lot better performance that would give me more headroom to OC. I already double checked to make sure i had enough thermal goop. im hitting about 75C when running prime95 (in-place large FFT's test), and about 40-45C under normal load. Ambient temp is about 26-27C (80F) are these temps fairly normal or is it in fact underperforming? the only two things I can think of are airflow conflicts with the cooler not drawing enough air through it, or the middle fan isnt working (I dont think this is it but I haven't been able to look to see for sure). according to HWMonitor my CPU fan is running at about 1500 rpm at both of those times. I did disable the quiet fan control option in BIOS, but I dont have anything that allows me to make a custom curve. (I just finished installing it like an hour or two ago)

[Scarface27]

What version of prime95 are you running? I know early generation cpu's have trouble with programs that stress FPU with avx loads, such as any prime95 version past 26.6

[Pastorcasper 2.0]

15 minutes ago, Scarface27 said:

What version of prime95 are you running? I know early generation cpu's have trouble with programs that stress FPU with avx loads, such as any prime95 version past 26.6

im assuming this is 28.7? lol also, I got some Noctua NF-P14s Redux fans as new case fans for better airflow, and they seem to be running quite loudly

[Pastorcasper 2.0]

3 minutes ago, Pastorcasper 2.0 said:

also, I got some Noctua NF-P14s Redux fans as new case fans for better airflow, and they seem to be running quite loudly

running at max it is quite noticeably loud, and then when just doing basic tasks they ramp up and down a lot (I dont have anything to make a custom curve), if its idling they are not very loud at all and easily drowned out

[WoodenMarker]

What's the core voltage at during load?

[Pastorcasper 2.0]

1 hour ago, WoodenMarker said:

What's the core voltage at during load?

heres while running prime 95

[WoodenMarker]

18 hours ago, Pastorcasper 2.0 said:

heres while running prime 95

Temps seem normal considering the core voltage. The DRP4 should be fine for 1.3v or maybe a bit more. The core voltage is a bit high especially considering the clock speed. Looking online, you should be able to go with higher clocks speeds with 1.2v or less for lower temps. Try that instead. 

 

[Pastorcasper 2.0]

1 hour ago, WoodenMarker said:

Temps seem normal considering the core voltage. The DRP4 should be fine for 1.3v or maybe a bit more. The core voltage is a bit high especially considering the clock speed. Looking online, you should be able to go with higher clocks speeds with 1.2v or less for lower temps. Try that instead. 

 

alrighty im just interested because on the be quiet site, it says that it is a 250W cooler, and im outputting about 85W at those speeds, I have taken into account the fact that their testing was likely more controlled for better results, and also the "contact plate?" is a bit big compared to my CPU, so I feel like I should be getting at least a little bit better temps than this, but it might just be a poor airflow problem. (And yea, I am hoping to get a decent OC sometime in the next week or two)

[WoodenMarker]

5 hours ago, Pastorcasper 2.0 said:

alrighty im just interested because on the be quiet site, it says that it is a 250W cooler, and im outputting about 85W at those speeds, I have taken into account the fact that their testing was likely more controlled for better results, and also the "contact plate?" is a bit big compared to my CPU, so I feel like I should be getting at least a little bit better temps than this, but it might just be a poor airflow problem. (And yea, I am hoping to get a decent OC sometime in the next week or two)

TDP is not a good method of comparison when it doesn't always mean the same thing and how it's measured isn't consistent. 

As mentioned, temps seem normal considering the core voltage. 

[Ajukrezi]

my setup is running with the same cooler and runs like this.
case airflow means ALOT. if the cooler cant get fresh air or get rid of old air it will have issues.

 

My fan curves are not at all optimized but does stay cool with no issues.

Didnt run the stress test that long but as said the fan curves kick in and keep it all cool

 

but iam also using 2 fans on the dark rock, 2 140mm fans and 1 120mm, but in a shitty case 

 

allthough my voltage is set to 1.335 i can se its higher in here.

 

 

[Pastorcasper 2.0]

4 hours ago, WoodenMarker said:

TDP is not a good method of comparison when it doesn't always mean the same thing and how it's measured isn't consistent. 

As mentioned, temps seem normal considering the core voltage. 

 

1 hour ago, Ajukrezi said:

my setup is running with the same cooler and runs like this.
case airflow means ALOT. if the cooler cant get fresh air or get rid of old air it will have issues.

 

My fan curves are not at all optimized but does stay cool with no issues.

Didnt run the stress test that long but as said the fan curves kick in and keep it all cool

 

but iam also using 2 fans on the dark rock, 2 140mm fans and 1 120mm, but in a shitty case 

 

allthough my voltage is set to 1.335 i can see its higher in here.

 

alrighty then, so I guess I have to just live with my loud fans with a weird fan curve I cant change, and try to get better airflow

[Ajukrezi]

36 minutes ago, Pastorcasper 2.0 said:

 

alrighty then, so I guess I have to just live with my loud fans with a weird fan curve I cant change, and try to get better airflow

well get some good fans that arent loud.

and orient coolers in a good way, i have mine pulling air in front and buttom and out top and back. i let em run pretty slow to be less noisy. ( i have some crappy and some be quiet fans) so i let the be quiet adjust in speed and the crappy ones are static slow speed.
its not silent but neither loud as hell, the most noisy component is the small little 20mm fan in my 10 year old motherboard

On 5/18/2020 at 1:51 AM, Pastorcasper 2.0 said:

according to HWMonitor my CPU fan is running at about 1500 rpm at both of those times. I did disable the quiet fan control option in BIOS, but I dont have anything that allows me to make a custom curve. (I just finished installing it like an hour or two ago)

FIY: the max fan speed for be quiet fans are 1500rpm 

 

[WoodenMarker]

12 hours ago, Ajukrezi said:

my setup is running with the same cooler and runs like this.
case airflow means ALOT. if the cooler cant get fresh air or get rid of old air it will have issues.

My fan curves are not at all optimized but does stay cool with no issues.

Didnt run the stress test that long but as said the fan curves kick in and keep it all cool

but iam also using 2 fans on the dark rock, 2 140mm fans and 1 120mm, but in a shitty case 

allthough my voltage is set to 1.335 i can se its higher in here.

That's not the same. The 2700k runs cooler than the 3770k given the same voltage since it's less thermally dense and has a soldered ihs. 

[Ajukrezi]

2 minutes ago, WoodenMarker said:

That's not the same. The 2700k runs cooler than the 3770k given the same voltage since it's less thermally dense and has a soldered ihs. 

nope not the same but still alot closer than modern CPUs. allthough 32 and 22 nm.

but the 2700k has a higher TDP.

[WoodenMarker]

20 minutes ago, Ajukrezi said:

nope not the same but still alot closer than modern CPUs. allthough 32 and 22 nm.

but the 2700k has a higher TDP.

Closer than what modern cpus? That's pretty vague. As mentioned, the tdp is not a good comparison when it's so inconsistent. 

 

The thermal difference between the 3770k and 2700k is pretty massive. There were plenty of articles that made a fuss over how IvyB was so much hotter. 

http://www.motormice.com/reviews/SZ77R5/cooling.htm

https://silentpcreview.com/intel-core-i7-3770-ivy-bridge-cpu/

https://www.legitreviews.com/intel-core-i7-3770k-3-5ghz-ivy-bridge-processor-review_1914/16

Using SiliconLottery's delidding results, CompuTronix's Intel Temperature Guide explains the die vs. ihs temperature delta going from <5c to 10-25c: https://forums.tomshardware.com/threads/intel-temperature-guide.1488337/

 

1.35v is about as high as you can expect for air cooling on the 3770k without delidding whereas it's not hard to find 2600k / 2700k's at 1.4v or higher with humble coolers like the Hyper 212's. 

[Pastorcasper 2.0]

1 hour ago, WoodenMarker said:

Closer than what modern cpus? That's pretty vague. As mentioned, the tdp is not a good comparison when it's so inconsistent. 

 

The thermal difference between the 3770k and 2700k is pretty massive. There were plenty of articles that made a fuss over how IvyB was so much hotter. 

http://www.motormice.com/reviews/SZ77R5/cooling.htm

https://silentpcreview.com/intel-core-i7-3770-ivy-bridge-cpu/

https://www.legitreviews.com/intel-core-i7-3770k-3-5ghz-ivy-bridge-processor-review_1914/16

Using SiliconLottery's delidding results, CompuTronix's Intel Temperature Guide explains the die vs. ihs temperature delta going from <5c to 10-25c: https://forums.tomshardware.com/threads/intel-temperature-guide.1488337/

 

1.35v is about as high as you can expect for air cooling on the 3770k without delidding whereas it's not hard to find 2600k / 2700k's at 1.4v or higher with humble coolers like the Hyper 212's. 

@WoodenMarker so about what temps would I be getting if I did run it at 1.35V? taking into account an avg of about 70F ambient 

[WoodenMarker]

7 minutes ago, Pastorcasper 2.0 said:

@WoodenMarker so about what temps would I be getting if I did run it at 1.35V? taking into account an avg of about 70F ambient 

Probably 90c or higher. 1.35v is high for the 3770k and not recommended. 

[Pastorcasper 2.0]

6 minutes ago, WoodenMarker said:

Probably 90c or higher. 1.35v is high for the 3770k and not recommended. 

ooh yea thats a bit hot, how high do u think I can go for voltage while keeping cpu temps around 80C?

[WoodenMarker]

7 minutes ago, Pastorcasper 2.0 said:

ooh yea thats a bit hot, how high do u think I can go for voltage while keeping cpu temps around 80C?

1.3v seems to be the limit for your cooling and is about as high as most people seem to go with with the 3770k for 24/7 usage. 

[Pastorcasper 2.0]

4 minutes ago, WoodenMarker said:

1.3v seems to be the limit for your cooling and is about as high as most people seem to go with with the 3770k for 24/7 usage. 

alrighty thanks

 

[freeagent]

I have a 3770K, it’s a hot cpu. 1.38 was my limit. That was good for 4700, 1.525 got my to 4900 for benching. Believe me, don’t listen to software because mine said 85w when my killawatt said otherwise. It’s a tough cpu to cool. The voltage you are running now gives me 4600 on my 3770K. As noted you need to move some air in that case to give your cooler a fighting chance. 90 is fine, I wouldn’t go much higher.

[Ajukrezi]

8 hours ago, WoodenMarker said:

Closer than what modern cpus? That's pretty vague. As mentioned, the tdp is not a good comparison when it's so inconsistent. 

 

The thermal difference between the 3770k and 2700k is pretty massive. There were plenty of articles that made a fuss over how IvyB was so much hotter. 

http://www.motormice.com/reviews/SZ77R5/cooling.htm

https://silentpcreview.com/intel-core-i7-3770-ivy-bridge-cpu/

https://www.legitreviews.com/intel-core-i7-3770k-3-5ghz-ivy-bridge-processor-review_1914/16

Using SiliconLottery's delidding results, CompuTronix's Intel Temperature Guide explains the die vs. ihs temperature delta going from <5c to 10-25c: https://forums.tomshardware.com/threads/intel-temperature-guide.1488337/

 

1.35v is about as high as you can expect for air cooling on the 3770k without delidding whereas it's not hard to find 2600k / 2700k's at 1.4v or higher with humble coolers like the Hyper 212's. 

Damn i did not know the difference what that big between the chips, i saw sandybrigde used more power as was to be expected. but didnt know the density changed that much

[WoodenMarker]

27 minutes ago, Ajukrezi said:

Damn i did not know the difference what that big between the chips, i saw sandybrigde used more power as was to be expected. but didnt know the density changed that much

The density made a big difference but probably not as much as going from soldered to thermal paste under the ihs.