Intel Boost clock vs Amd Boost clock

Toggle sidebar Toggle sidebar
A

Abhraneel Roy

Distinguished
May 29, 2014
692
1
19,015
Intel i7 8700(non k) should run at a base clock of 3.2 Ghz and it has a boost clock of 4.6 Ghz
And an Amd Ryzen 7 2700(non X) has a base clock of 3.2 Ghz and a boost of 4.1 Ghz
When i see benchmarking videos in youtube of i7 8700(non k) it runs at 4.295 ghz constant (I watched like 6 videos and 6 of them had the same clock speed of 4.295 Ghz).
I myself have a Ryzen 7 2700(non X) which runs at 3.2 Ghz base clock and sometimes goes to 3.3 ghz for like a second or two and then comes back to 3.2....Isnt this how the boost clock of a cpu should work ?
If i overclock it to 3.6 ghz then its a different story because at that time it runs at constant 3.6 ghz.
Boost clocks are intended to work on only 1 core for a short time(like 1-2s)when needed and should work automatically(as far as i know).
Does boost clocks work different on Amd and Intel ?
 
Solution
Supahos
You see the chart from my first post here. Heck read the whole review of the 2700. It's actually the slowest of the r5s and r7s when left stock. That why you won't see many if any suggested by people here for gaming setups. If you buy a better cooler it should pretty easily hit 4.0 on all cores
Sort by date Sort by votes
Supahos

Supahos

Expert
Ambassador
Nov 11, 2013
12,756
48
57,640
https://www.tomshardware.com/reviews/ryzen-7-2700-2700x-review,5606.html

About 1/3 of the way down the page you'll see the thread vs speed chart for stock speeds of all the 2*** series linup except the 2600

The boosts work differently between Intel and AMD. The x series chips for AMD hold boost clocks with more cores than their non x brothers. Though if you get into the 9900k which also has 16 threads from Intel it doesn't hold anywhere near 5.0 at stock with all 16 threads loaded either... Actually goes down to 3.6 if you limit it to the 95 watts it's rated for
 
Upvote 0 Downvote
A

Abhraneel Roy

Distinguished
May 29, 2014
692
1
19,015
So that means the i7 8700(non k) can hold the boost clock speed for an unlimited time but the ryzen 7 2700 cannot , only for 1-2 secs but the 2700x can do the same as intel non k cpus which can also hold for an unlimited time.
 
Upvote 0 Downvote
A

Abhraneel Roy

Distinguished
May 29, 2014
692
1
19,015
So that means Intel can hold all their cores at the boost speed for a long time but R7 2700 can only hold 2 cores maximum for a short time and comes back to normal.

This is the reason why i am getting only 100 fps in rainbow six siege because my gpu usage is only 70-80% which means i need a much higher clock speed so that my gpu can be used at 100% that which can only be done on Intel cpus because they can hold all their cpu cores on a higher frequency for a long time including non k cpus too
 
Upvote 0 Downvote
Supahos

Supahos

Expert
Ambassador
Nov 11, 2013
12,756
48
57,640
Stop mentioning time. It's completely irrelevant. Its all about how many cores are loaded up at the time. As long as as temps are good they'll both hold the boost clocks for the number of cores active indefinitely.

As you've seen a completely stock 1700/2700 make for poor gaming CPUs since their stock frequencies are lower even under boost.

Both become quite capable when overclocked. Additionally having ram at 3000-3200 helps both processors a lot (if actually running there many people buy 3000mhz ram and don't know you have to make it run at that speed.)

To have 70-80% usage on a gpu is actually pretty good. Most systems aren't actually that balanced. Usually one part is in the 50-60 range when the other is 100%
 
Upvote 0 Downvote
A

Abhraneel Roy

Distinguished
May 29, 2014
692
1
19,015
But in the Amd site it says precision boost 2 can boost all the threads.
For example a ryzen 7 2700u has 4 core 8 threads , a base clock of 2.2 ghz and boost clock of 3.8 ghz ....During precision boost 2 all the threads were running at 2.9 ghz except 2 threads running at a max of 3.67 ghz until the temperatures are much higher.
Arent precision boost 2 work on all threads instead of just 1 or 2 and..
From my conclusion i can say my ryzen 7 2700 has 3.2 stock and boost 4.1
Shouldnt it be running at 3.6 or somewhat 3.7 (depends on the temperatures) automatically ??
 
Upvote 0 Downvote
TerryLaze

TerryLaze

Polypheme
May 9, 2016
9,465
2,426
60,940


For intel at least they used to have turbo tables on net,that would show how they turbo,basically all cores active you have the least amount of turbo,and the fewer cores that are active the higher the boost.
If precision boost determines that there are two threads with high usage and the rest do less work,then boosting those two cores more then the others gives you better performance.
Which is why often a overclocked ryzen is slower then at stock.
 
Upvote 0 Downvote
Supahos

Supahos

Expert
Ambassador
Nov 11, 2013
12,756
48
57,640
You see the chart from my first post here. Heck read the whole review of the 2700. It's actually the slowest of the r5s and r7s when left stock. That why you won't see many if any suggested by people here for gaming setups. If you buy a better cooler it should pretty easily hit 4.0 on all cores
 
Upvote 0 Downvote
Solution
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom