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Message boards : Number crunching : Upgrading old mother boards.

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Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (12,015)PPS LLR Turquoise: Earned 5,000,000 credits (6,278,437)SGS LLR Ruby: Earned 2,000,000 credits (2,747,648)TRP LLR Bronze: Earned 10,000 credits (46,835)321 Sieve Silver: Earned 100,000 credits (242,784)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (176,158)Generalized Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (132,094)PPS Sieve Emerald: Earned 50,000,000 credits (75,196,813)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (472,814)TRP Sieve (suspended) Silver: Earned 100,000 credits (201,478)AP 26/27 Sapphire: Earned 20,000,000 credits (25,559,924)GFN Jade: Earned 10,000,000 credits (11,380,463)
Message 79345 - Posted: 7 Sep 2014 | 22:56:48 UTC
Last modified: 7 Sep 2014 | 23:37:50 UTC

Which cpu would you guys go with Intel Q9950 or AMD 6300 FX ? I'm going to put some old mother boards back in service for Prime Grid. Which would serve the Prime Grid cpu projects better overall.

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321 LLR Amethyst: Earned 1,000,000 credits (1,336,554)Cullen LLR Amethyst: Earned 1,000,000 credits (1,114,814)ESP LLR Amethyst: Earned 1,000,000 credits (1,004,266)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (618,684)PPS LLR Amethyst: Earned 1,000,000 credits (1,058,191)PSP LLR Amethyst: Earned 1,000,000 credits (1,367,424)SoB LLR Amethyst: Earned 1,000,000 credits (1,691,911)SR5 LLR Amethyst: Earned 1,000,000 credits (1,226,031)SGS LLR Amethyst: Earned 1,000,000 credits (1,236,202)TRP LLR Amethyst: Earned 1,000,000 credits (1,097,559)Woodall LLR Amethyst: Earned 1,000,000 credits (1,170,522)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,001,505)PPS Sieve Emerald: Earned 50,000,000 credits (53,184,267)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,007,577)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,999,175)AP 26/27 Bronze: Earned 10,000 credits (20,215)GFN Sapphire: Earned 20,000,000 credits (49,288,593)PSA Gold: Earned 500,000 credits (606,016)
Message 79351 - Posted: 8 Sep 2014 | 5:07:27 UTC - in response to Message 79345.

I'm no CPU geek, but definitely would go for FX6300.

Reasons: it's newer, faster, has two extra cores, faster memory bus.
See http://cpuboss.com/cpus/Intel-Core2-Quad-Q9550-vs-AMD-FX-6300. Do scroll down to see the differences that went into their evaluation.

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Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (2,038,739)Cullen LLR Ruby: Earned 2,000,000 credits (2,074,615)ESP LLR Ruby: Earned 2,000,000 credits (2,013,823)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,142,353)PPS LLR Turquoise: Earned 5,000,000 credits (5,225,319)PSP LLR Ruby: Earned 2,000,000 credits (2,049,284)SoB LLR Ruby: Earned 2,000,000 credits (2,700,268)SR5 LLR Ruby: Earned 2,000,000 credits (2,053,250)SGS LLR Turquoise: Earned 5,000,000 credits (5,147,768)TRP LLR Ruby: Earned 2,000,000 credits (2,025,737)Woodall LLR Ruby: Earned 2,000,000 credits (2,014,811)321 Sieve Sapphire: Earned 20,000,000 credits (23,770,672)Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (944,431)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,813,253)PPS Sieve Double Silver: Earned 200,000,000 credits (339,665,412)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,446,797)AP 26/27 Sapphire: Earned 20,000,000 credits (33,140,471)GFN Sapphire: Earned 20,000,000 credits (41,983,025)PSA Sapphire: Earned 20,000,000 credits (20,457,430)
Message 79352 - Posted: 8 Sep 2014 | 11:49:26 UTC - in response to Message 79345.

Which cpu would you guys go with Intel Q9950 or AMD 6300 FX ? I'm going to put some old mother boards back in service for Prime Grid. Which would serve the Prime Grid cpu projects better overall.


That sort of depends on your situation, in general Intel cpu's crunch faster here at PG then AMD cpu's do, BUT there are other factors too. Cost would make the choice the AMD cpu, as they are cheaper, often MUCH cheaper. You could then spend some money on faster memory and be close to the Intel speeds. Each cpu maker does it a bit differently, PG seems to be designed to take advantage of the Intel way, that does NOT mean it doesn't work the AMD way, because it does!! In the short run we are taking very short amount of time differences in each unit, in the long run it could easily end up being more then one units worth over a week or month depending on the units you crunch.

I am an AMD guy, so buy the parts like you do and then buy some faster memory to help offset the speed advantage the Intel cpu's have. Now an Intel cpu with some fast memory IS really fast, but I don't have that kind of money to throw out there. AND in my case I will not crunch for PG alone forever, so the AMD is a better choice in the long run for me.

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Found 5 primes in the 2021 Tour de PrimesFound 5 mega primes in the 2021 Tour de PrimesThe "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 6 mega primesFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)Cullen LLR Ruby: Earned 2,000,000 credits (3,624,591)ESP LLR Turquoise: Earned 5,000,000 credits (5,021,269)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Jade: Earned 10,000,000 credits (16,008,485)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (34,291,181)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,252,256)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (2,911,985)321 Sieve Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,118,303)GFN Emerald: Earned 50,000,000 credits (76,733,355)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 79356 - Posted: 8 Sep 2014 | 12:11:40 UTC - in response to Message 79352.

Which cpu would you guys go with Intel Q9950 or AMD 6300 FX ? I'm going to put some old mother boards back in service for Prime Grid. Which would serve the Prime Grid cpu projects better overall.


That sort of depends on your situation, in general Intel cpu's crunch faster here at PG then AMD cpu's do,


MODERN Intel CPUs crunch better at PrimeGrid because of AVX and FMA, which are poorly implemented on AMD.

Prior to AVX, Intel and AMD were almost equal in terms of performance at PrimeGrid. Generally speaking, if I remember correctly, the Intel CPUs at that time were slightly better, and the most modern AMD CPUs performed about the same as the previous generation of Intel CPUs. That's what you're comparing here -- an older Intel CPU vs. a somewhat newer AMD CPU. I'm guessing the 6300FX is a Phenom II-based CPU? The Intel Core2 and AMD Phenom II CPUs were similar in performance, but the Phenom IIs were both newer and less expensive.

The Intel CPU in question is either two or three generations too old to have AVX (depending on how you define "generation"), so there's no automatic benefit to using Intel.
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Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 26 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 2 Fermat divisors2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes highest prime countFound 22 primes in the 2019 Tour de Primes2020 Tour de Primes highest prime scoreFound 21 primes in the 2020 Tour de PrimesFound 4 mega primes in the 2020 Tour de Primes321 LLR Double Silver: Earned 200,000,000 credits (201,403,028)Cullen LLR Double Bronze: Earned 100,000,000 credits (188,339,206)ESP LLR Double Silver: Earned 200,000,000 credits (203,249,784)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (109,580,172)PPS LLR Double Gold: Earned 500,000,000 credits (647,115,820)PSP LLR Double Bronze: Earned 100,000,000 credits (126,982,721)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (214,194,272)SGS LLR Double Silver: Earned 200,000,000 credits (200,731,695)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Silver: Earned 200,000,000 credits (201,215,056)Woodall LLR Double Bronze: Earned 100,000,000 credits (101,447,725)321 Sieve Double Silver: Earned 200,000,000 credits (235,451,253)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,728,039,937)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Silver: Earned 200,000,000 credits (385,720,907)GFN Double Amethyst: Earned 1,000,000,000 credits (1,984,821,252)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 79358 - Posted: 8 Sep 2014 | 12:46:28 UTC

The Q9550 is a true quad core. The FX6300 is a "Bulldozer" AMD CPU, and thus is substantially newer. It is also technically a 6-core processor, but this isn't quite true as the FX6300 has 6 integer cores, but only 3 float cores.

see here for a comparison.

So the answer depends on what you are going to run.

The FX6300 should be a good bit faster on sieve work. It also offers bigger cache and extra threads/cores that would be helpful to GPU processing in tandem with CPU usage (e.g., it would be better on the current WFS challenge on PRPnet). It also has a bit faster stock core clock.

That said, the Q9550 still has better single threaded performance (especially in floating point operations). For smaller to mid-sized LLR projects, that means it is probably a bit better overall than the FX6300 since it can run full tilt on 4 workunits at a time with LLR, whereas the FX6300 would be spreading LLR work across three float cores.

On larger LLR work, however, where FFT size is large and cache (and even physical RAM) is heavily used, the FX6300 has the advantage of an L3 cache, faster bus speed, and the potential to be used in a board with DDR3 memory, which should largely equalize the single thread performance issue.

If I were choosing, I would go with the FX6300 given its advantages in more numerous PG applications and for it being more "future-proof" since FFT sizes on all LLR projects are steadily increasing as we test further.

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321 LLR Ruby: Earned 2,000,000 credits (2,050,518)Cullen LLR Ruby: Earned 2,000,000 credits (2,282,176)ESP LLR Ruby: Earned 2,000,000 credits (3,106,610)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,142,891)PPS LLR Turquoise: Earned 5,000,000 credits (5,014,094)PSP LLR Ruby: Earned 2,000,000 credits (3,475,366)SoB LLR Double Bronze: Earned 100,000,000 credits (180,081,042)SR5 LLR Ruby: Earned 2,000,000 credits (3,027,344)SGS LLR Turquoise: Earned 5,000,000 credits (5,042,519)TRP LLR Ruby: Earned 2,000,000 credits (2,010,534)Woodall LLR Ruby: Earned 2,000,000 credits (2,077,196)321 Sieve Ruby: Earned 2,000,000 credits (2,483,203)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (28,991,973)PPS Sieve Double Turquoise: Earned 5,000,000,000 credits (6,003,339,738)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (24,236,704)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,007,588)AP 26/27 Jade: Earned 10,000,000 credits (10,058,984)GFN Jade: Earned 10,000,000 credits (15,782,029)PSA Gold: Earned 500,000 credits (525,865)
Message 79371 - Posted: 9 Sep 2014 | 0:55:28 UTC

Sticking any GPUs on the mobos?
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Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (12,015)PPS LLR Turquoise: Earned 5,000,000 credits (6,278,437)SGS LLR Ruby: Earned 2,000,000 credits (2,747,648)TRP LLR Bronze: Earned 10,000 credits (46,835)321 Sieve Silver: Earned 100,000 credits (242,784)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (176,158)Generalized Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (132,094)PPS Sieve Emerald: Earned 50,000,000 credits (75,196,813)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (472,814)TRP Sieve (suspended) Silver: Earned 100,000 credits (201,478)AP 26/27 Sapphire: Earned 20,000,000 credits (25,559,924)GFN Jade: Earned 10,000,000 credits (11,380,463)
Message 79403 - Posted: 9 Sep 2014 | 20:02:20 UTC - in response to Message 79371.

I will probably put an ATI Radeon 5870, or I have a Nvidia GTX 660.

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321 LLR Ruby: Earned 2,000,000 credits (2,050,518)Cullen LLR Ruby: Earned 2,000,000 credits (2,282,176)ESP LLR Ruby: Earned 2,000,000 credits (3,106,610)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,142,891)PPS LLR Turquoise: Earned 5,000,000 credits (5,014,094)PSP LLR Ruby: Earned 2,000,000 credits (3,475,366)SoB LLR Double Bronze: Earned 100,000,000 credits (180,081,042)SR5 LLR Ruby: Earned 2,000,000 credits (3,027,344)SGS LLR Turquoise: Earned 5,000,000 credits (5,042,519)TRP LLR Ruby: Earned 2,000,000 credits (2,010,534)Woodall LLR Ruby: Earned 2,000,000 credits (2,077,196)321 Sieve Ruby: Earned 2,000,000 credits (2,483,203)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (28,991,973)PPS Sieve Double Turquoise: Earned 5,000,000,000 credits (6,003,339,738)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (24,236,704)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,007,588)AP 26/27 Jade: Earned 10,000,000 credits (10,058,984)GFN Jade: Earned 10,000,000 credits (15,782,029)PSA Gold: Earned 500,000 credits (525,865)
Message 79411 - Posted: 10 Sep 2014 | 5:09:49 UTC - in response to Message 79403.

That 660 should churn through sieves nicely
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Message boards : Number crunching : Upgrading old mother boards.

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