147 replies to this topic

[Goose]

Every time I try to read up on a G3258, I get mixed signals about memory speed (and the relevance of motherboard choice.) 4.7GHz is an expectation, at 1.375V, but at what temps, and with what cooler?

This will up your power consumption; And also picking a video card with a cross-flow cooler can help you cause, too, but you basically can't find such a card for less then $180 (GTX 960, this one R9 280 that comes and goes out'a stock) …

[Oderint dum Metuant]

Goose, on 22 April 2015 - 06:28 PM, said:

Every time I try to read up on a G3258, I get mixed signals about memory speed (and the relevance of motherboard choice.) 4.7GHz is an expectation, at 1.375V, but at what temps, and with what cooler?

This will up your power consumption; And also picking a video card with a cross-flow cooler can help you cause, too, but you basically can't find such a card for less then $180 (GTX 960, this one R9 280 that comes and goes out'a stock) …

What mixed signals about memory speed?

[Flapdrol]

Goose, on 22 April 2015 - 06:28 PM, said:

Every time I try to read up on a G3258, I get mixed signals about memory speed (and the relevance of motherboard choice.) 4.7GHz is an expectation, at 1.375V, but at what temps, and with what cooler?

This will up your power consumption; And also picking a video card with a cross-flow cooler can help you cause, too, but you basically can't find such a card for less then $180 (GTX 960, this one R9 280 that comes and goes out'a stock) …

I'm running the pentium, because my board is H81 I can't overclock the memory, so that's running at 1333, I've lowered the timings though, so the latency would be on par with 1600c9. If you pair it with a Z board you can overclock the memory.

The pentium doesn't have AVX, so synthetic stress tools like prime and linx don't hit it quite as hard, overclock is mostly limited by how much voltage and temps you dare to run. On my chip 4.5 was quite easy on the stock cooler, over 80 degrees with prime though, but cpu's are hard to kill, and the pentium is of course semi expendable

[Goose]

This, above:

• Can you get DDR3-1600-speeds on a non-Z board?
  
• Can you get DDR3-1600-speeds on a Z board?
  
• Can you get DDR3-1866-speeds on a Z board?
  
• ad nasiium

Every one of those questions gets a different answer, one per source …

[Oderint dum Metuant]

Goose, on 23 April 2015 - 09:40 AM, said:

This, above:

• Can you get DDR3-1600-speeds on a non-Z board?
  
• Can you get DDR3-1600-speeds on a Z board?
  
• Can you get DDR3-1866-speeds on a Z board?
  
• ad nasiium

Every one of those questions gets a different answer, one per source …

I have my DDR3 1333mhz overclocked and running at 1600 on a Z board. ( MSI gaming)

Also this review

http://www.guru3d.co...-review,12.html

Would suggest it can cope with memory speeds exceeding 1333

Edited by DV McKenna, 23 April 2015 - 11:30 AM.

[Christopher Hamilton]

i chose a bit different approach.

i got myself a old 2005 highend graphics workstation with Intel x5000 chipset, 8 banks of *interleaved* DDR2-666 (16Gb) and two passively cooled 5060 xeons (30 USD each used, i sold the 5020s in there for 20 each, the coolers weigh 3 pounds solid copper). it comes with 840 watts powersupply and i paid (with no disk and gfx card) 160 USD for the rig (and 20 for upgrading cpus). then i spent 200 USD on a used 5gb Asus HD7970 Direct CU II Ghz Edition, which is essentially a R280-X, but handles PCIe 2.0 better. 70 USD for a 1Tb Disk and im done. Runs roundabout 45 FPS on this game. I got a 2nd card coming as soon as i lay my hands on the 1000 W powersupply from the same manufacturer (very special custom power-to-mainboard connector). board has 2 16xPCIe 2.0 lanes, both on different PCI hubs.

downside: graphics workstations are heavy. this one is 50+ pounds.
upside: they have airflow channels. the baby stays very cool and is almost silent.

for a 10 year old box it runs smooth as hell and fast enough to compete with some new gear at 2x (or more) the price. main point of this approach was using a old "upper upper end" machine, it would not make sense without a very fast memory setup (interleaved ddr2-666 - that means it works at roundabout 1200mhz compareable modern gear speed [1] ) and the 2 fat 3.2 ghz xeons (the old flagship stuff is still hard to beat: pure cache size drag racing. [2] ). excessive chipset bandwidth sure was a plus, too. going stock workstation gear for most of it also meant that it is rocksolid and thermally cool. ATI was main supplier on those, so that explains the HD7970 - which is essentially a business card with different firmware and some stuff disabled.


EDIT:
[1] interleaving memory means they use 2 banks on 2 channels to fetch in parallel where a consumer oriented system will have two banks on 1 channel sharing the high bandwith (so essentially cutting it in half).
[2] the more cache L1 and L2 you have on single-threading stuff, the faster it is run in the CPU, since it does not need to go to "time expensive" memory and will thus execute stuff faster.

Edited by Christopher Hamilton, 23 April 2015 - 12:59 PM.

[Flapdrol]

Goose, on 23 April 2015 - 09:40 AM, said:

This, above:

• Can you get DDR3-1600-speeds on a non-Z board?
  
• Can you get DDR3-1600-speeds on a Z board?
  
• Can you get DDR3-1866-speeds on a Z board?
  
• ad nasiium

Every one of those questions gets a different answer, one per source …

Non Z overclocking is only the cpu speed, not the memory. The pentium has a 1333 memory speed default, so with the pentium you can't run 1600 on a non z board, but you can run 1600 with an i5 or i7, because that's what they default to.

With a Z board you can overclock the memory, so you can set other speeds on the pentium as well.