Corei7 940 and DDR3-1600

[cjsnyxz]

Hi,

I am trying to build a machine like following.

Core i7 940
OCZ Gold 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
ASUS P6T SE LGA 1366 Intel X58 ATX Intel Motherboard
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:

I am wondering if 940 and this motherboard will support the memory speed. Is the speed too high for 940? Am I wasting my money on memory choice (maybe 1333 is better)?

Thanks,

Eric

 

[cjsnyxz]

Hi,

I am trying to build a machine like following.

Core i7 940
OCZ Gold 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
ASUS P6T SE LGA 1366 Intel X58 ATX Intel Motherboard
:
:

I am wondering if 940 and this motherboard will support the memory speed. Is the speed too high for 940? Am I wasting my money on memory choice (maybe 1333 is better)?

Thanks,

Eric
Reply : Quote : Top : Bottom : Edit

 

[Sacraster]

just get 920, i dont see any point getting 940. your memory is fine for both 920 and 940

 

[daw123]

If you have already got the 940, then fair enough.

If you haven't bought the 940, then:
Buy the 950 instead (same price (in the UK at least), but better stepping (D0 not C0) and 133MHz higher clock speed, due to an increase in the CPU multiplier); or
Buy the 920 D0 and save some money;
Unless you can get the 940 cheap.

If you are over-clocking the CPU, remember that you will be doing so by raising BCLK (since the CPU multiplier is upwards locked unless you've got the 965/975) and the memory speed will also increase as well proportionally, unless you reduce the memory multiplier to compensate.

The ASUS P6T SE can handle memory speeds up to DDR3 2000MHz (through overclocking). This is an extract from the Asus website for the MB:

Triple-Channel DDR3 2000(O.C.) / 1866(O.C.) / 1800(O.C.) / 1600(O.C.) / 1333 / 1066 support
The motherboard supports DDR3 memory that features data transfer rates of 2000(O.C.) / 1866(O.C.) / 1800(O.C.) / 1600(O.C.) /1333 / 1066 MHz to meet the higher bandwidth requirements of the latest 3D graphics, multimedia, and Internet applications. The triple-channel DDR3 architecture enlarges the bandwidth of your system memory to boost system performance.

 

[kerr]

Yes that motherboard will support that ram speed. The only waste is going with the 940 chip. IMHO

 

[Shmee]

Get an i7 920 D0, you will save money and better off. If you really want to spend the money, then get a 950.

 

[Cannyone]

I have a non "SE" P6T with a C1 core 920. I was able to raise the BCLK to 200 (for 1600 speed memory) and drop the CPU Ratio to 18 - giving me 3.6GHz speed with no voltage tweeks. And it's stable on air (Zalman CNPS9900), though the core temps do get up to around 71-72°C under full load.

Considering this result, with a non-D0 stepping core. I can't see why anyone would feel the need to buy a 940 unless it was less than $300. See you can't get a D0 core in the 940s, but you can in the 920s. So you're spending more money and eliminating the opportunity to get the best Over-clocking chip in years.

 

[daw123]

Originally posted by: Cannyone
I have a non "SE" P6T with a C1 core 920. I was able to raise the BCLK to 200 (for 1600 speed memory) and drop the CPU Ratio to 18 - giving me 3.6GHz speed with no voltage tweeks. And it's stable on air (Zalman CNPS9900), though the core temps do get up to around 71-72°C under full load.

Considering this result, with a non-D0 stepping core. I can't see why anyone would feel the need to buy a 940 unless it was less than $300. See you can't get a D0 core in the 940s, but you can in the 920s. So you're spending more money and eliminating the opportunity to get the best Over-clocking chip in years.

Do you honestly think you are going to get a I7 940 (even when its discontinued) for less than $300, when the 920 is $270 (and its not a guaranteed D0 stepping). So for a 266MHz speed increase, you pay an extra $30. And the fact that the 940 will produce a higher over-clocked speed (by virtue of the higher CPU multiplier).

http://www.google.com/products...2&scoring=p#ps-sellers

I hope you get a job in Intel's Finance Department.

I agree with you that the 920 is a good over-clocking CPU for the price.

 

[Shmee]

Antares digital guarantees D0 920's for $280. http://www.antaresdigital.com/...tid=16135&cat=0&page=1

 

[Cannyone]

Originally posted by: daw123

Originally posted by: Cannyone
I have a non "SE" P6T with a C1 core 920. I was able to raise the BCLK to 200 (for 1600 speed memory) and drop the CPU Ratio to 18 - giving me 3.6GHz speed with no voltage tweeks. And it's stable on air (Zalman CNPS9900), though the core temps do get up to around 71-72°C under full load.

Considering this result, with a non-D0 stepping core. I can't see why anyone would feel the need to buy a 940 unless it was less than $300. See you can't get a D0 core in the 940s, but you can in the 920s. So you're spending more money and eliminating the opportunity to get the best Over-clocking chip in years.

Do you honestly think you are going to get a I7 940 (even when its discontinued) for less than $300, when the 920 is $270 (and its not a guaranteed D0 stepping). So for a 266MHz speed increase, you pay an extra $30. And the fact that the 940 will produce a higher over-clocked speed (by virtue of the higher CPU multiplier).

http://www.google.com/products...2&scoring=p#ps-sellers

I hope you get a job in Intel's Finance Department.

I agree with you that the 920 is a good over-clocking CPU for the price.

I guess I fail at communicating... Which makes some sense, because I do "live under a rock" of sorts. So let me try this again.

1. At first I wasn't interested in Core i7, I won't attempt to explain why here atm.
2. I kept reading about how well the Core i7 overclocked really well. So I decided I wanted to build a mildly overclocked system on Core i7, for use as a gaming machine for the next few years.
3. I didn't really want to spend a ton of money on this project. I was very careful in selecting a motherboard. So I just ordered CPU in a combo deal with the motherboard for $20 off.
4. In my experience this setup was supremely easy to overclock. I was able to get 3.6GHz stable, with ease. No voltage tweeks needed. - In fact, since that time I've backed off a bit. Because I want things to run cool and last. Except I do have my memory at 1600Mhz. I just dropped the CPU Ratio.

Now! When I consider the facts in #4. I can't see a reason to buy a more expensive CPU. And if anyone reading this was thinking about buying a Core i7 processor, I would humbly suggest that they get a 920. At least if they do, they have a chance of getting a D0 which should overclock much better than my C0/C1. If they follow the common notion that you "get what you pay for", by purchasing a 940... they are wasting their money. Because, to my knowledge, none of the CPUs besides the 920 have the D0 stepping. Though I hear that the new 950 and 975 do have it.

Still if Shmee is correct. I suggest that it would be a better choice to get a D0 stepping 920 (while you can!). The money you save in buying this chip will almost pay for a top of the line motherboard. Or whatever else you might want.

As for myself, I paid $500 for a CPU and motherboard, and so far I'm really happy with both!

 

[imported_Shaq]

What QPI do you need for 200BCLK? Did you leave it on auto? I hit a wall at 192 for either 20 or 21 multiplier.

 

[aigomorla]

i think this user is a bot.

Hi eric can you reply with something besides your original post?