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10x Intel Engineering Samples

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Thread Starter 

Introduction
Welcome, let me first explain what this is about then we can get into the meat. I was offered the opportunity to bench 9 unique G3258 Intel Confidential engineering samples. The chips are on loan for a short period of time but I can bench as much as I want while I have them. Don't bother asking how or why I get them because I cannot tell you. I don't know the exact state of the chips but I was told they are essentially new and un molested. From a close inspection I think that they are in fact 100% new as the socket mark on the IHS doesn't look like the marks my socket makes, regardless, the point is that they are fresh!

I recently acquired a G3258 ES of my own. The chip I own has changed hands a few times and is proven to be a very good sample. Last weekend I did some DICE testing and I was able to pass WPrime 1024 at 5.7ghz with 1.62v, so I know I have an excellent chip. For testing purposes I am going to test my chip with the lot of 9 to see how it compares. None of the chips are delidded, but mine could definitely use it since it has been cold many times and has been benched by several people.

The goal is to find the best chip and bench it with DICE. I want to increase all my pervious G3258 2D scores on hwbot. I am planning on at least two DICE sessions to complete all the 2D stages worth points. So, I have 10 chips and I need to find the best one...how does one go about this process? I spent some time researching binning methods and eventually created a few hybrid tests from all my research.

Testing Methods
TEST 1
The first test is simple, find the maximum core clock with a completely stock bios. The method is to boot the board with all settings on auto and adjust the multiplier in the OS until the systems becomes unstable. To find the max multiplier, I will be running WPrime 32M after each increase. The last passable multiplier is the one that is recorded. This is a quick and dirty method of finding pseudo stability. This is not 24/7 stable by any means, but basically it means the OS wont crash on me. 24/7 stable clocks are for chumps... tongue.gif

TEST 2
This test is more advanced than test 1 and should be an indicator of potential of each chip. For this test, I set the clocks and voltages in the bios then load the OS and decrease the core voltage until the system becomes unstable. As with test 1, I will be using WPrime 32M after each voltage step decrease. The bios settings are as follows: all-core multi = 45, cache multi = 40, core voltage = 1.3v, cache voltage = 1.15v, VCCIN = 1.9v. Once in the OS, I decrease the core voltage in 0.01v steps then run WPrime 32M until I get a crash. The last passable voltage is the one that is recorded.

TEST 3
In this test stage I will be testing CPU stability based on the voltage I found in test 2. For the stability test I will use Cinebench R15, which is much more stressful bench than WPrime 32M. Once I have obtained the voltage in test 2, I enter that in the bios (nothing else is changed) and run Cinebench R15. This is a simple pass or fail type of test.

TEST 4
This test is purely to test weather or not the CPU has the potential to boot the OS at 5ghz. Based on all of my pervious experience with G3258, getting into the OS at 5G is pretty difficult since its a healthy 56% increase. I set the cap voltage at 1.47v, which is high but its just for a very short period and I have exceptional cooling power. I don't have any specific data on the 5G ambient capabilities of G3258, but some quick research on hwbot has showed me that its less than 15% of all chips can do it.

This is a very difficult test for the chip, and obviously a good indicator of OC potential, however, its not the whole story. Some chips are better with subzero cooling than air proportionally. You could have a very good ambient chip that doesn't do well with subzero, and the inverse is also true. If I have time, I would like to test the best 5G chip and the best 4.5G chip with subzero to see exactly how they differ. The bios settings are as follows for 5G: all-core multi = 50, cache multi = 40, core voltage = 1.43v (to start), cache voltage = 1.15v, VCCIN = 1.9v.

TEST 5
So the chip made it in the OS at 5g, good for it...but can it do anything? This test is about what I consider pseudo stability at 5G, namely, the aforementioned WPrime 32M. I will increase the voltage in the bios (up to a cap of 1.5v) to see what voltage is required to pass WPrime.

IMC Quality Testing
I would like to test the quality of the integrated memory controller as this is critical to the benchability of the chip. There are a few different ways of doing this, and definitely different opinions all around. I have chosen the simples and quickest method possible. My plan is to figure out the required VDDR voltage for a specific set of timings and speeds. I will be using PSC clocked at 2600MHz with timings of CL8.0 12-8-28 1T. The stability test will be SuperPi 32M. While I don't think this is the most accurate test of the IMC, it is probably the easiest and should be a decent indicator of the IMC potential, at least for ambient.


Results


Conclusions
Now that I have the data, I need to analyze it and decide which is the best overall chip. This has proven to be a difficult process because there is a lot of data here and it doesn't all line up perfectly and point to "the" obvious best chip. From my point of view, it seems that test 5 is the best indicator of overall OC potential. Other than looking at test 5, I think the next best indicator would be the combination of tests 2 & 3. From the perspective of choosing the best chip I think its pretty clear that tests 1 & 2 can ben rules out. I was hoping that I would be able to make a correlation between VID and OC potential, but clearly its all random and there is no conclusion to be drawn.

Based on my analysis of the data, I think the best chips with the most potential for cold are #3 and #7. What do you think?? I would love to hear your opinions and questions...

This is just the first stage of testing, there will be much more to come so stay tuned. Pics or it didn't happen right?

24/7 BENCH
(9 items)
 
  
CPUCPUMotherboardGraphics
[LGA115x] 7700K, 7350k, G3258 [LGA2066] 7940X, 7740X [OCF FTW] X299 OCF, Z170M OCF, Z97 OCF E-Power, G-Power, H-Power...WTB A-Power 
RAMCoolingCoolingPower
B-DIE, HYKO, PSC, MFR Kingpin Venom 6.66 2x360 RAD Custom Loop Seasonic Prime Platinum 1200W 
Case
Dimastech Easy V3.0 
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24/7 BENCH
(9 items)
 
  
CPUCPUMotherboardGraphics
[LGA115x] 7700K, 7350k, G3258 [LGA2066] 7940X, 7740X [OCF FTW] X299 OCF, Z170M OCF, Z97 OCF E-Power, G-Power, H-Power...WTB A-Power 
RAMCoolingCoolingPower
B-DIE, HYKO, PSC, MFR Kingpin Venom 6.66 2x360 RAD Custom Loop Seasonic Prime Platinum 1200W 
Case
Dimastech Easy V3.0 
  hide details  
Reply
post #2 of 3
Thread Starter 
**RESERVED FOR SUBZERO TESTS**
24/7 BENCH
(9 items)
 
  
CPUCPUMotherboardGraphics
[LGA115x] 7700K, 7350k, G3258 [LGA2066] 7940X, 7740X [OCF FTW] X299 OCF, Z170M OCF, Z97 OCF E-Power, G-Power, H-Power...WTB A-Power 
RAMCoolingCoolingPower
B-DIE, HYKO, PSC, MFR Kingpin Venom 6.66 2x360 RAD Custom Loop Seasonic Prime Platinum 1200W 
Case
Dimastech Easy V3.0 
  hide details  
Reply
24/7 BENCH
(9 items)
 
  
CPUCPUMotherboardGraphics
[LGA115x] 7700K, 7350k, G3258 [LGA2066] 7940X, 7740X [OCF FTW] X299 OCF, Z170M OCF, Z97 OCF E-Power, G-Power, H-Power...WTB A-Power 
RAMCoolingCoolingPower
B-DIE, HYKO, PSC, MFR Kingpin Venom 6.66 2x360 RAD Custom Loop Seasonic Prime Platinum 1200W 
Case
Dimastech Easy V3.0 
  hide details  
Reply
post #3 of 3
Wonderful!. Hope you great joy and fun smile.gif and of course find some other great G3258 wink.gif.
Samsa-PC
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Intel Core i7 5960X @ 3750 MHz 1.12v Gigabyte X99 Soc Champion Asus HD7850 DCII 2GB G.Skill Ripjaws 4 16GB 3000 MHz 15-15-15-35 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 250GB Seagate Barracuda 7200.12 LG DVDRW Combo LQ custom: Apogee HD, 2x MRC320QP, Bitspower fi... 
OSMonitorKeyboardPower
Windows 7 Ultimate x64 LG Flatron LED 23" IPS236 Gear K5108 Evga SuperNova 1300 G2 
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Custom Benchtable Razer DeathAdder Black Razer Goliathus Alpha MadCatz Tritton AXPro 5.1 
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Samsa-PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 5960X @ 3750 MHz 1.12v Gigabyte X99 Soc Champion Asus HD7850 DCII 2GB G.Skill Ripjaws 4 16GB 3000 MHz 15-15-15-35 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 250GB Seagate Barracuda 7200.12 LG DVDRW Combo LQ custom: Apogee HD, 2x MRC320QP, Bitspower fi... 
OSMonitorKeyboardPower
Windows 7 Ultimate x64 LG Flatron LED 23" IPS236 Gear K5108 Evga SuperNova 1300 G2 
CaseMouseMouse PadAudio
Custom Benchtable Razer DeathAdder Black Razer Goliathus Alpha MadCatz Tritton AXPro 5.1 
  hide details  
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