Xeon E3-1245v3 encodes slower than a i5-4570 with handbrake?

[GeezerMan]

I compared two PCs side by side with the job of coding a bluray to MP4 H.264 with handbrake. I'm not very experienced doing video encoding.
One PC has a i5-4570, 8GB ram, onboard video only, Win 7 64 Pro
2ND PC has a Xeon E3-1245V3, 16GB ECC Ram, onboard video only, win 10 64 pro

The Xeon should be a faster encoder since its almost the equal of an i7-4790 , the Xeon graphics are a tad slower than the i5-4570 graphics. My testing showed the Xeon to be slower by 3 minutes than the i5-4570
any ideas? thanks
[08:30:21] CPU: Intel(R) Xeon(R) CPU E3-1245 v3 @ 3.40GHz
[08:30:21] - Intel microarchitecture Haswell
[08:30:21] - logical processor count: 8
[08:30:21] OpenCL device #1: Intel(R) Corporation Intel(R) HD Graphics P4600
[08:30:21] - OpenCL version: 1.2
[08:30:21] - driver version: 10.18.15.4240
[08:30:21] - device type: GPU
[08:30:21] - supported: YES
[08:30:21] Intel Quick Sync Video support: yes
[08:30:21] - Intel Media SDK hardware: API 1.16 (minimum: 1.3)
[08:30:21] - H.264 encoder: yes
[08:30:21] - preferred implementation: hardware (any)
[08:30:21] - capabilities (hardware): bpyramid icq+la+i
[08:30:21] - H.265 encoder: no

 

[USER8000]

The Xeon actually has a higher clocked GPU and the same number of EUs too. Try checking the BIOS to see if there is TDP limited setting-it could be configured quite lowly.

 

[TheELF]

Could be ram speed or even hard disk speeds/degree of fragmentation.
Only way to make sure is to transcode the same file * with the same settings from and to ramdisk that should give you the best comparison between the two.

*different movies might have different bitrates and or resolutions making the comparison invalid.

 

[GeezerMan]

it was the same file, source on a internal hard disk , output to a internal SSD that the OS is on. Hard Disk was not fragmented. I've read that ECC ram is slower, but I don't think that would account for all of the slower encode.

The i5 is installed in a gaming Z87 motherboard, The Xeon is installed in a workstation with C226 chipset. So, there may be all sorts of settings I don't know about.

 

[Burpo]

It's the difference in chipsets.. The Z87 has higher current limits & better power tuning, allowing your CPU & graphics to boost to higher sustained clock speeds. The C226 chipset isn't about speed as much as stability.

 

[crashtech]

It would be really interesting to slap the E3 into the Z87 and see what happens.

 

[LTC8K6]

The Xeon graphics are actually a tad faster. The Xeon should handily win this battle, so something else is at play.

https://ark.intel.com/compare/75043,75462

 

[GeezerMan]

As a matter of fact, my MSI GD65 Z87 supports the E3, so it is something I am considering doing.
My understanding on a Haswell CPU is that it should not be taken over 80 degrees C core temp.
Is that the accepted advice?
Another reason to move the E3 to the GD65 is that I have a good cooler on the GD65 that under heavy encoding load, the cpu sits at 54 C

Thanks everyone

 

[crashtech]

I have never heard about the 80°C thing, Haswell TjMax is at least 100°C and I have run many of them for extended periods in the 90s with no ill effects. I think it's nice if you can keep them under 90° under worst case conditions (Prime95 AVX load, high ambient temps) because then you know that it won't ever throttle. Many times we have seen new users come on here saying their 4770K or 4790K is hitting 100°C with the stock cooler, and this is indeed plausible while using programs like Prime95 that induce power consumption well over any normal load.

 

[GeezerMan]

it was a Tom's article on temperature and Haswell. The suggestion was for a longer life to avoid going over 80. Most of us don't even keep a CPU for 5 years, so it's probably a non issue.

 

[GeezerMan]

I got around to looking at this again. I reset everything to default in Handbrake, and ran the tests again. Again, coding a bluray to H.264
This time the Xeon E3-1245v3 was about 19.3% faster than the i5-4570, which I think is what's expected

 

[crashtech]

Was this without putting the CPU in your Z87 board?

 

[GeezerMan]

Yes, I still have the Xeon in the workstation with C226 chipset. I m thinking I had one setting different on Handbrake with the Xeon test