CPU真係快D好D? CPU大戰, I7 , I5 35Watt 1150 CPU with Pentium 65W

blau.vol

CAS 播歌,  好多人話應該快D 好D, 但一直與我的Believe 有些距離,  小弟一路認為,CPU 應該愈慢愈好.  很多時都做Underclock.  

前兩天找來其他師兄幫手 , 如CKKeung .  大家再作一次comparison....,   這一次主要測試不同CPU 在同一個Platform 底下,  是否有聽感的分別.  如有,  那一個較好呢?

現時的Intel platform 已出到LGA1150 Haswell一代的平台,  而Z87 chipset 是家用PC 的最高級chipset.  所以我們找來了Intel Z87chipset 底板作為今次的測試底板,

由於希望排除CPU Fan 的影響,  所以用了Streacom FC8 EVO機箱作測試,  透過Heat pine 把CPU 熱量導到機箱的散熱片,  (由於要使用被動式散熱, 所以對 CPU的型號有嚴格要求. 最高不可高於65Watt的CPU才可選擇).

這次我找來全是Intel Platform 的CPU.  



1. LGA1150, Pentium G3420 (65W)
2. LGA1150 , i5-4570T (35W)
3. LGA1150, i7-4765T (35W)


測試平台:
CAS:
-JPlay v5.2 , MS Windows 7 (Tuned )
-ASRock Z87M-ITX ,  Wifi /Bluetooth module unmounted, (選這一塊底板,  因為之後可以試SATA 與M-sata的分別).
-Kingston Hyper X Memory 4GB x 2 (CL9).
-Plextor M5S SSD HD
-Streacom FC8 EVO fanless chassis
-Delta Switching Power Supply 350W (placed on floor)

-DAC: LKS ES9018 x 2 DAC
-USB cable:  bought at Golden Computer Centre (NO NAME)
-Poweramplifer: Pass Labs X250.5 Power amplifer
-Speaker: VOLENT Audio Speaker

首先, 我們先試Pentium G3420 ,  
用OPUS 3 Showcase 1 Black Beauty 作為測試曲目.  all in JPlay v5.2 Hibernate mode,  all buffer set to DIRECTLINK in JPlay Setting.   

1.  Pentium 是可以的.  沒有什麼問題.  (其實我一直用Sandy Bridge 一代的 Pentium CPU)   

2.  -之後再攪一輪 hardware (Streacom fanless chassis 換CPU, 一D 都不容易 ) .  試Intel I5-4570T (Low power CPU,35W )  同一首歌,  Background darkness 靜了.  輕微迅變表現更好.  把之前自己的想法打破了少少......

3.  最後又攪一輪.....  試Intel I7-4765T ( low power, 35W,   both low voltage version NOT available in Hong Kong retail).  比Intel i5 更好. Background darkness 可能差不多, 也可能好DD (由於換一次heatpipe CPU時間比較長, 所以耳朵記憶力不100%準, 但一定不是天壤之別的一類) .  但i7-4765T 的音樂感更smooth ,  flow 更流暢....,  可以話嬴了.....

比賽完成............  多謝閱讀!!!

Cheers!
Blau

P.S: 其實之前有一次機會,  比較底板,  發覺穩壓比較好的, 聲好D, (之前好聲的是8相的).  低頻鬆容D....  只是這次再試CPU.


-Low Power consumption CPU


-Related Kingston HyperX CL9 RAM

  

wakalaaa

用既ram, mb都有影響架。我試過靚asus既底版好好聲。
所以個d咩咩amd 880cas底版，又underclock又undervolt唔好盡信。

blau.vol

Hi wakalaaa hing ,


I did tried ASUS motherboard too.... Good sound definitley.    I use ASRock this time is because its WiFi module can be unmounted and got mSATA connector.... for my future comparison!


I tried G.Skill CL7 RAM also...  GOOD SOUND TOO!  

wakalaaa

而家電腦耗電冇以前噤大了，mb都好多技術減低noise.

blau.vol

Yes, definitely the power consmption for CPU and MB is much less than 2-3 years ago.  


normally,  the motherboard power consumption is 40W in idle.....

ASRock one is 40~41W in idle.
ASUS Gryphon Z87 ,  around 42W in long idle and 58W  when idle

When we add the CPU (35W) and one SSD(10W),  total is less than 100W in normal consumption or music playback .

Best ,
Blau

CKKeung

Amongst the three CPUs that Ben and I tested yesterday, the i5-4570T has the best c/p rato.

However, I think most audiophiles are willing to spend hk$1k more to get the best i7-4765T !

ccscho

Was there any comparison to CD transport (SPDIF), media players like Soundaware D100 Pro deluxe (SPDIF/AES/EBU) or Aurender (USB) together with the PC (USB) with the same song ?

ok102006

as far as I know - CPU, GPU, memory, SSD controller, chipset - all could be overclocked, have to check carefully with manufacturer

overclocked component will generate more noise

blau.vol

ok hing, yes,  overclocked is not good for CAS....  

therefore,  I only do normal usage for comparsion.

Cheers!
Blau

blau.vol

ccscho 發表於 2014-3-11 20:53
Was there any comparison to CD transport (SPDIF), media players like Soundaware D100 Pro deluxe (SPD ...

ccscho hing,
sorry, we did not do that kind of test last night.   we are focusing on the CPU with sonic performance....
Cheers!
Blau

obee

我很贊同

fredtam

blau.vol 發表於 2014-3-11 07:12
Yes, definitely the power consmption for CPU and MB is much less than 2-3 years ago.  

Dear Ben,
Thanks for sharing your findings.
Can I upgrade to Pentium i7 from Pentium dual core G-3220 which is what I have right now ?
FYI, my mother board is ASRock B85M Pro4 socket 1150MB
Thanks for your kind attention.

darkfrank

我覺得在穩定性為第一大前提下速度越快越好，CAS就是這麼一回事
另外睇到版主對ram係Micron chips，試試elpida chips包你有驚喜

CAS2012

I do not fully agree the general case on CAS that faster CPU is better. But in your case, Window + Jplay, I agree. I tried Jplay two years ago, the web already recommended i7, 8G RAM, I think it is a crazy thing. That is why I turn my CAS to Linux.

hercules

Ben hing, maybe you can run this latency checker later, lower the latency, the sound should be better.

http://www.thesycon.de/deu/latency_check.shtml

obee

這個FANLESS CASE是我的DREAM PC CASE, 但太貴了.

類似的比較我也有做. 自從用了 Daphile, 發現同是 linux + squeezebox, 為何用 Cubieboard / Pi  的聲音會比下去? 我起初以為是因為 Daphile 用real time kernel, 但後來把 Cubieboard 換成 real time kernel 後, 聲音是好了, 但比我用PC行Daphile還是有點不及. 所以我放棄了玩小電腦.

但用大電腦玩CAS有個大問題, 就是耗電大. 我手上有幾台大電腦, 如果全都用線性牛,
Atom ~ 20W (上落不大)
i3-2105 ~ 50-100W, idle 55W (上落很大)
SL9400 notebook ~ 25-40W, idle 25W

我也有想過買 4770T, 但是我覺得好像有點浪費手上的電腦, 所以仲未買. 而因為熱的問題, 我現在主要用 SL9400 和 Atom 玩.

corolladv

Thx sharing

blau.vol

CAS2012 發表於 2014-3-11 22:22
I do not fully agree the general case on CAS that faster CPU is better. But in your case, Window + J ...

Cas2012 hing,

I do not agree either !! From my knowledge, I prefer something slower!  I cannot conclude faster is better.  I can only tell that i7 sound better than i5 and g3420.  Too some extents, the frequency for I 7 is slower than the other two ar.

FYI: that i7 is 2.0GHz,  i5 is 2.9GHz,  and that Pentium is 3.2GHz in frequency. the i7-4765T is much slower than other two in term of frequency.  just it got more core and more internal cache.   

The is just the finding I found yesterday night. I was shocked too.

For the i7 and jplay forum sharing, I read that too.  I normally do not believe their finding until I did the test myself which I can tell what is the real sonic difference in precise wording.  rather than one word: better.

Interesting , the finding apply to jriver as well.  

Cheers,
Blau

blau.vol

obee 發表於 2014-3-11 22:54
這個FANLESS CASE是我的DREAM PC CASE, 但太貴了.

類似的比較我也有做. 自從用了 Daphile, 發現同是 linux ...

obee hing,  
Streacom FC8 chassis is not expensive la!  compare with your NEW DAC!! hehe.....

4770T is 45W in power consumption ,  不要買啦,  CK's i7-4765T is not bad at all ! which is only 35W in power consumption.  wiht FC8 chassis heatpipe,  the cpu is around 4x in degree C in temperature.  not really hot.  

Cheers!!!
Blau

blau.vol

darkfrank 發表於 2014-3-11 22:18
我覺得在穩定性為第一大前提下速度越快越好，CAS就是這麼一回事
另外睇到版主對ram係Micron chips，試試elp ...

darkfrank hing,

Thank you very much for your info!!
may I ask where can I find that memory module ?  do you think I can purchase in HOng Kong.  

真好!  好久沒有在HiEndy 有這麼 Technical 的dicussion! Yeah!!  

CHEERS!
Blau