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Thread: 8 Core AMD FX8350 vs Intel Core i7 4700k |
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Thread Status: Active Total posts in this thread: 16
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BitWalker
Cruncher Joined: Dec 5, 2013 Post Count: 4 Status: Offline Project Badges: 
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Hi, can someone confirm my experience comparing these two CPUs for solving WCG tasks? Both systems I have used for testing have the same amount of RAM (16 GB) and both CPUs are running at 4 GHz (the core i7 4700k is overcloked to 4 GHz while the AMD FX8350 already comes with 4 GHz). Both systems are running Win 7 64 bit and the versions of the BOINC clients are identical too.
Both systems are solving "Mapping Cancer Markers", "The Clean Energy Project Phase 2" and "FightAIDS@Home" (so no use of GPU). To build average values for generated points and results I was observing one week of work, both just solving BOINC tasks without having other jobs or interruptions. In the BOINC settings I set CPU usage to 80%. The result is that the Intel Core i7 4700k solves almost the double quantity of tasks and generates the double amount of points (in average). I'm just wondering about this, because both use 8 cores and are running at the same CPU clock frequency. Can someone explain this, or at least confirm? Cheers, BitWalker |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Why do you set the CPU usage to 80%?
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BitWalker
Cruncher Joined: Dec 5, 2013 Post Count: 4 Status: Offline Project Badges:
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Just to save CPUs "lifetime" by not running them overheatet all the time ;-)
To be more precise: The max. number CPUs for both is 100% but the max. CPU time I set to only 80% Like this both CPUs are working with temperatures under 80°C (range is 70°C - 80°C) |
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Falconet
Master Cruncher Portugal Joined: Mar 9, 2009 Post Count: 3295 Status: Offline Project Badges: 
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Those temps seem rather high.
----------------------------------------Maybe you should clean the dust or buy better coolers... AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W AMD Ryzen 7 7730U 8C/16T 3.0 GHz |
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BitWalker
Cruncher Joined: Dec 5, 2013 Post Count: 4 Status: Offline Project Badges:
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I had a look again right now, and maybe I was to pessimistic first.
The AMD currently is a little under 70°C (around 68°C) and the Intel a bit over 70°C (around 73°C). In general, I don't think that such temperatures for these CPUs would be too high. Don't forget they are running at 4 GHz permanently. But the temp's are not my issue / topic :) How can you explain the big differences in performance? |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
The most recent AMD generation is much slower than I expected. This is the architects' decision. Intel's Haswell cpus are also slower, though not by as much as AMD. However, Intel has sped up the top of the line, which runs hotter than the lesser cpus. So yes, I believe your numbers. In the future, we cannot take for granted that the latest will be faster than the old.
Lawrence |
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Mamajuanauk
Master Cruncher United Kingdom Joined: Dec 15, 2012 Post Count: 1900 Status: Offline Project Badges: 
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Hi, can someone confirm my experience comparing these two CPUs for solving WCG tasks? Both systems I have used for testing have the same amount of RAM (16 GB) and both CPUs are running at 4 GHz (the core i7 4700k is overcloked to 4 GHz while the AMD FX8350 already comes with 4 GHz). Both systems are running Win 7 64 bit and the versions of the BOINC clients are identical too. This can be easily explained by running and comparing the CPU benchmark in BOINC. This is an option under Advanced options in the Boinc menu.Both systems are solving "Mapping Cancer Markers", "The Clean Energy Project Phase 2" and "FightAIDS@Home" (so no use of GPU). To build average values for generated points and results I was observing one week of work, both just solving BOINC tasks without having other jobs or interruptions. In the BOINC settings I set CPU usage to 80%. The result is that the Intel Core i7 4700k solves almost the double quantity of tasks and generates the double amount of points (in average). I'm just wondering about this, because both use 8 cores and are running at the same CPU clock frequency. Can someone explain this, or at least confirm? Cheers, BitWalker You will find a significant difference between the two...
Mamajuanauk is the Name! Crunching is the Game!
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BitWalker
Cruncher Joined: Dec 5, 2013 Post Count: 4 Status: Offline Project Badges:
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Oh, many thanks for this hint - so simple and effective !
----------------------------------------I only forgotten that there is this feature in the BOINC client... :) Core i7 4700 --------------------------------------------- 3783 floating point MIPS (Whetstone) per CPU 10828 integer MIPS (Dhrystone) per CPU AMD FX8350 --------------------------------------------- 1502 floating point MIPS (Whetstone) per CPU 7937 integer MIPS (Dhrystone) per CPU ... indeed, that explains the big difference! Okay, on the other hand you can get the FX8350 for the half price of a i7 4700k Cheers, BitWalker [Edit 2 times, last edit by BitWalker at Jan 5, 2014 9:33:02 AM] |
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Falconet
Master Cruncher Portugal Joined: Mar 9, 2009 Post Count: 3295 Status: Offline Project Badges:
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Oh, many thanks for this hint - so simple and effective ! I only forgotten that there is this feature in the BOINC client... :) Core i7 4700 --------------------------------------------- 3783 floating point MIPS (Whetstone) per CPU 10828 integer MIPS (Dhrystone) per CPU AMD FX8350 --------------------------------------------- 1502 floating point MIPS (Whetstone) per CPU 7937 integer MIPS (Dhrystone) per CPU ... indeed, that explains the big difference! Okay, on the other hand you can get the FX8350 for the half price of a i7 4700k Cheers, BitWalker Those FX-8350 figures seem awfully low... I've seen better benchmarks of that CPU... My Phenom II X3 720 BE at 2.8 GHZ (stock) has this: 3368 floating point MIPS (Whetstone) per CPU 6952 integer MIPS (Dhrystone) per CPU I managed to get it to 3.5GHZ once and it reached 3900 (or so) floating point and 11000 (or so) Integer but the PSU was complaining and I don't to use too much power. Temps are at 47 celsius with stock AMD cooler. Are you sure that the motherboard/windows isn't throtling the CPU? Btw, FAAV runs a lot faster on Linux 64 bits. AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W AMD Ryzen 7 7730U 8C/16T 3.0 GHz [Edit 4 times, last edit by Falconet at Jan 5, 2014 10:24:14 AM] |
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Mamajuanauk
Master Cruncher United Kingdom Joined: Dec 15, 2012 Post Count: 1900 Status: Offline Project Badges:
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Oh, many thanks for this hint - so simple and effective ! I only forgotten that there is this feature in the BOINC client... :) Core i7 4700 --------------------------------------------- 3783 floating point MIPS (Whetstone) per CPU 10828 integer MIPS (Dhrystone) per CPU AMD FX8350 --------------------------------------------- 1502 floating point MIPS (Whetstone) per CPU 7937 integer MIPS (Dhrystone) per CPU ... indeed, that explains the big difference! Okay, on the other hand you can get the FX8350 for the half price of a i7 4700k Cheers, BitWalker Those FX-8350 figures seem awfully low... I've seem better benchmarks of that CPU... My Phenom II X3 720 BE at 2.8 GHZ (stock) has this: 3368 floating point MIPS (Whetstone) per CPU 6952 integer MIPS (Dhrystone) per CPU I managed to get it to 3.5GHZ once and it reached 3900 (or so) floating point and 11000 (or so) Integer but the PSU was complaining and I don't to use too much power. Temps are at 47 celsius with stock AMD cooler. Are you sure that the motherboard/windows isn't throtling the CPU? Btw, FAAV runs a lot faster on Linux 64 bits. 05/01/2014 10:24:50 | | Benchmark results: Check the m/b has the latest bios and drivers for the chipset within Windows. Also are you running 32 bit or 64 bit Windows? Also, I would agree that the temperatures are high, mine run flat out at 55C although they are watercooled. I would expect your's to run around 10C hotter on air. They will be effected by the ambient temp in the room they are located in. Let us konw how you get on etc...
Mamajuanauk is the Name! Crunching is the Game!
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