passmark not the way to find powerfull cpu's?

General Discussions
1

I was having the impression that Passmark says something about how powerfull a cpu is.
For instance a CPU with Passmark of 2000 is needed for a good transcoding. That is how I understood it so far.
Now I did see this youtube movie from Span.com: https://www.youtube.com/watch?v=N0_uj2twcsY&t=553s
And they compared a Synology DS918+ in it. And around 7 minutes, they brought up the Qnap 1685 which would be not fast enough.

In short: The Synology has the Celeron J3455 and the Qnap has the Xeon-D 1521/1531 on board.
In Passmark it is 2153 passmark vs 6980 (1441 single)/9730 (1513) passmark.
The Qnap should be 3x as powerfull as the Synology.

But in the video they talk about the transcoding engine. What is the transcoding engine?
In short the CPU needs to bee 2000 passmark at least and it should have an transcoding engine onboard?

Thanks ahead,

Rob

2

Transcoding engine is probably just a fancy name for the GPU part of the Celeron CPU.
The Xeon doesn’t have a GPU.

Therefore the Celeron might be faster than expected when transcoding certain types of video files.
Faster than you might expect from its passmark points.

GPU = graphics processing unit

3

I really doubt the NAS with the Celeron has a GPU, but yes in the non XEONs are GPU’s build in to the CPU.
Which indeed would mean that passmark is leading, but you can gather a bonus if you have a GPU on board?

Thanks for your answer.

Rob

4

@emisary@gmail.com said:
I really doubt the NAS with the Celeron has a GPU, but yes in the non XEONs are GPU’s build in to the CPU.

This particular Celeron has a GPU. Admittedly, it is a very weak, very old design - but it might still help when doing video transcoding.
https://ark.intel.com/products/95594/Intel-Celeron-Processor-J3455-2M-Cache-up-to-2_3-GHz

Which indeed would mean that passmark is leading, but you can gather a bonus if you have a GPU on board?

It also depends on how modern the GPU is. The newer the design is, the mpre codecs are supported or the higher resolutions are supported etc. There are a lot of variables involved here, so giving you a straight number is almost impossible.

5

Thanks for your insight.

But also indeed, that GPU in the Celeron is not that powerfull.
Even then a a cpu at 25% of the other with a weak gpu is still faster?

So if I would buy the 1685 (no money to really buy), or a xeon-d system and add a standalone GPU it would function?

Rob

6

Hello,
Maybe I should have put this question into the NAS section?

I just looked at (document from Plex about Nas and its capabilities): https://docs.google.com/spreadsheets/d/1MfYoJkiwSqCXg8cm5-Ac4oOLPRtCkgUxU0jdj3tmMPc/edit#gid=314388488

And it seems that the Celeron in the qnap is having issues where the Xeon-D is not having these issues
QNAP TS-253B x86 Celeron J3455 Yes Yes Yes Yes Yes* *May struggle with some high bitrate 1080p media
TS-1685 x86 Xeon D-1521/D-1531 Yes Yes Yes Yes Yes

According to this table, the Xeon-D is powerfull enough.

Am I missing something?
Is a weak celeron with a weak gpu stronger then a strong cpu?

rob