Socket 939 Sempron found........

Page 31 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.
S

SlitheryDee

Originally posted by: Icopoli

2.) SLI is pointless.

Well, it is when your processor in under so much load that it can't take advantage of it.
 

porkster

Member
Mar 31, 2004
141
0
0
Originally posted by: borannow, I dont want HT to be disabled as a means of lowering performance or leveling the field. but mainly as a way to get to the bottom linne wether or not this is an OS scheduling issue. if they disable HT and suddenly about as much divX gets done as the AMD it'd be damnd hard to blame the AMD memory controller. that is why I want HT disabled...

hear hear...

.
 

porkster

Member
Mar 31, 2004
141
0
0
Originally posted by: Icopoli
In our Far Cry tests, the AMD system with a single Nvidia graphics card still beat the frame rates posted by the Intel system with dual SLI cards.

No both systems had single gfx card. it's a typing mistake in their sixth update. At the time the tests were going you could also only see one gfx card in the cam pic of the Intel system.

.
 

Jeff7181

Lifer
Aug 21, 2002
18,368
11
81
Originally posted by: Pederv
Here we go, no HT.

Good... this'll finally prove to those morons that it has absolutely nothing to do with the memory controller, but rather Windows' scheduler and Hyper-Threading.
 

porkster

Member
Mar 31, 2004
141
0
0
Note to all. the Intel system has had its mobo changed from the Asus to an Intel Ref board as the Asus couldn't have HT turned off. The problem with changing the board is that some readings for power etc, wont be displayed. So don't whine later about Intel faults at not displaying figures.

Here are the pages we are monitoring

NOTE : The Intel System has Hyper Threading Turned OFF

CPU Load

Loop Counts and FPS.

.
 

Jeff7181

Lifer
Aug 21, 2002
18,368
11
81
Originally posted by: porkster
Note to all. the Intel system has had its mobo changed from the Asus to an Intel Ref board as the Asus couldn't have HT turned off. The problem with changing the board is that some readings for power etc, wont be displayed. So don't whine later about Intel faults and not displaying figures.

.

None of the load balancing stats seem to be working. Oh well... that seems kinda useless anyway.





Question to anyone who can answer it.

Since both rigs are running only two threads in parallel now, do the 3rd and 4th threads get assigned a specific core? Meaning... say the Divx encode and Far Cry are running on Core 1, and the MP3 encode and Winrar are running on Core 2... could the divx encode be "moved" to core 2, and the MP3 encode moved to core 1???
 

porkster

Member
Mar 31, 2004
141
0
0
Originally posted by: Jeff7181None of the load balancing stats seem to be working. Oh well... that seems kinda useless anyway.

Yeah they would have been nice to see how the load was being dished out on the INTEL CPU.

The next test they should do is force the AMD X2 to do the dvd-to-divx thread with HT turned back on the Intel 840EE.

.
 

porkster

Member
Mar 31, 2004
141
0
0
AMD System -----
DivX: 0.1% <<<<<<<
Farcry: 41.1%
Lame Encoder: 14.3%
WinRAR: 42.3%
Load CPU1: 100.0%
Load CPU2: 99.9%

Early CPU Loadings point ....

EDITED : But now the Intel is displaying the CPU loadings.

Intel System -----
DivX: 0.7% <<<<<<<
Farcry: 45.9%
Lame Encoder: 14.0%
WinRAR: 37.1%
Load CPU1: 100.0%
Load CPU2: 100.0%
Load CPU3: 95.2%
Load CPU4: 97.5%

.
 

AkumaX

Lifer
Apr 20, 2000
12,647
4
81
if HT is turned off, how come there's still 4 CPUs for the Load Balance Page?

Originally posted by: porkster
Originally posted by: Icopoli
In our Far Cry tests, the AMD system with a single Nvidia graphics card still beat the frame rates posted by the Intel system with dual SLI cards.

No both systems had single gfx card. it's a typing mistake in their sixth update. At the time the tests were going you could also only see one gfx card in the cam pic of the Intel system.

.

that's not how i read it; i think THG actually *admits* that the AMD system w/ 1 card beat the Intel SLI solution from BEFORE they were both forced to use 1 card

edit: and now the AMD system's changing load balance...

DivX: 0.9%
Farcry: 41.7%
Lame Encoder: 22.8%
WinRAR: 35.8%
Load CPU1: 100.0%
Load CPU2: 100.0%
 

porkster

Member
Mar 31, 2004
141
0
0
Originally posted by: AkumaXthat's not how i read it; i think THG actually *admits* that the AMD system w/ 1 card beat the Intel SLI solution from BEFORE they were both forced to use 1 card

Yeah I agree. Most likely a context error in they way they worded the sentence, but sitll a bold claim. SLI not beating single GFX, is a bit hard to accept.

.
 

Jeff7181

Lifer
Aug 21, 2002
18,368
11
81
Originally posted by: porkster
Originally posted by: AkumaXthat's not how i read it; i think THG actually *admits* that the AMD system w/ 1 card beat the Intel SLI solution from BEFORE they were both forced to use 1 card

Yeah I agree. Most likely a context error in they way they worded the sentence, but sitll a bold claim. SLI not beating single GFX, is a bit hard to accept.

.

It's because at that point the test is no longer GPU dependant... it's completely CPU dependant.
 

boran

Golden Member
Jun 17, 2001
1,526
0
76
I'll reserve my judgements for tomorrow morning (my time) because right now there's not enough data.
and as mentioned, the HT might still be on, because the load balance page shows still 4 cores... maybe it is just the page. i'll check back before i'm off to bed.
 

porkster

Member
Mar 31, 2004
141
0
0
Originally posted by: AkumaXedit: and now the AMD system's changing load balance...

DivX: 0.9%

Both are below 1.0, so it looks like the problem is the priority level and the way the divx encoding is processing. Early data would say they will both be neck and neck on the task.

The test now is to force the dvd-divx thread to a high priority and turn on HT on the Intel and see which CPU performs the best. The proper stress test since they ironed out most of the issues.

.
 

Jeff7181

Lifer
Aug 21, 2002
18,368
11
81
Originally posted by: porkster
Originally posted by: AkumaXedit: and now the AMD system's changing load balance...

DivX: 0.9%

Both are below 1.0, so it looks like the problem is the priority level and the way the divx encoding is processing. Early data would say they will both be neck and neck on the task.

The test now is to force the dvd-divx thread to a high priority and turn on HT on the Intel and see which CPU performs the best. The proper stress test since they ironed out most of the issues.

.

I think Intel is doing a huge disservice to themselves and their customers by disabling HT in the Pentium D. As you can see, from the results so far, a dual core 3.2 GHz Pentium D (which is basically what that 840EE has become with HT off) is handily being thumped by the 4800+.

HT with dual cores is the same exact story as it was with single cores. It allows for heavier multi-tasking as it's capable of running 4 threads simultaneously vs. the X2 4800+'s 2 threads simultaneously.

*EDIT* It's the exactly problem described by Anand in his review. Windows sucks at preemptive multitasking.
 

porkster

Member
Mar 31, 2004
141
0
0
The tests are kind of saying, for the price of two inbuild CPU's you get three. Hyperthreading is a great feature, especially when you consider the power use and grunt of the extra two pipes.

Having only 2 cpu pipes makes multitasking a problem, when comparing to a dual core CPU with hyperthreading.

.
 
S

SlitheryDee

Originally posted by: Jeff7181
Originally posted by: porkster
Originally posted by: AkumaXedit: and now the AMD system's changing load balance...

DivX: 0.9%

Both are below 1.0, so it looks like the problem is the priority level and the way the divx encoding is processing. Early data would say they will both be neck and neck on the task.

The test now is to force the dvd-divx thread to a high priority and turn on HT on the Intel and see which CPU performs the best. The proper stress test since they ironed out most of the issues.

.

I think Intel is doing a huge disservice to themselves and their customers by disabling HT in the Pentium D. As you can see, from the results so far, a dual core 3.2 GHz Pentium D (which is basically what that 840EE has become with HT off) is handily being thumped by the 4800+.

HT with dual cores is the same exact story as it was with single cores. It allows for heavier multi-tasking as it's capable of running 4 threads simultaneously vs. the X2 4800+'s 2 threads simultaneously.

*EDIT* It's the exactly problem described by Anand in his review. Windows sucks at preemptive multitasking.


Anand also found several situations where HT negatively impacted performance, most notably in some of his real world multitasking scenarios.

In those the pentium D without HT usually came out top.

Edit: Actually, upon looking I only found one clear case of this :eek:

But, here it is anyway.
 

porkster

Member
Mar 31, 2004
141
0
0
Originally posted by: Jeff7181I think Intel is doing a huge disservice to themselves and their customers by disabling HT in the Pentium D. As you can see, from the results so far, a dual core 3.2 GHz Pentium D (which is basically what that 840EE has become with HT off) is handily being thumped by the 4800+.

HT with dual cores is the same exact story as it was with single cores. It allows for heavier multi-tasking as it's capable of running 4 threads simultaneously vs. the X2 4800+'s 2 threads simultaneously.

*EDIT* It's the exactly problem described by Anand in his review. Windows sucks at preemptive multitasking.

Totally agree.

The presscott cpu's are such great overclockers so I don't think Intel wants customers buying the low end and getting top end performance, a reason maybe why they disable features like HT in the low end of their product range.

We are still yet to know what priority level the dvd-to-divx thread is, so you can't blame the OS yet.

.
 

porkster

Member
Mar 31, 2004
141
0
0
Originally posted by: SlitheryDeeAnand also found several situations where HT negatively impacted performance, most notably in some of his real world multitasking scenarios. In those the pentium D without HT usually came out top.

Yeah I recall those statements.

WinRAR seems well tailored to AMD, so maybe they should use windows defacto ZIP to be more fair.

.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
27,260
16,118
136
yes, if something doesn't work well on the Intel, use something else..... lame.

Edit BTW, AMD winning two, tied on two..... Almost the same as with HT IMO, except the Intel put more time into the divx.