Athlon X2 7750 BE Unlocked to Quad-Core

[n0ryu]

not working for me. already set acc to auto when i first got the chip and board. it wouldn't have been sweet if it worked.

 

[Darknova]

why can't some one hack the bios and see which parameter opens these hidden cores? We will have a secret section available for logged in members only

And oh make sure that hack is set for NV boards too

But still PII rules

I've actually been trying matey, but AMI BIOSes, especially the newer ones are a bitch to modify. Basically if you do any modification, the BIOS corrupts, seems to be some sort of protection (i think).

 

[Static~Charge]

I have a question: is that 4th core functional and stable? In other words, did AMD take a perfectly good quad-core and turn off one core, or did one core turn out to be defective so they sold it as a tri-core?

 

[LittleLizard]

i wonder what mobo they used lol

it says in there they used an asrock 790gx

 

[Darknova]

I have a question: is that 4th core functional and stable? In other words, did AMD take a perfectly good quad-core and turn off one core, or did one core turn out to be defective so they sold it as a tri-core?

I don't think mine is no, but the BIOS was so buggy it's entirely possible it was just the BIOS at fault. Most tri-cores are quads with a defective core. Some people however are lucky and get good working 4th cores, it really is complete pot-luck.

 

[newtekie1]

It still amazes me the number of people that are suprised to find out that all the processors from a manufacturer use the same die, and just have parts disabled to make lower end processors...

 

[nazaropeth]

uoops, AMD did it again This is even better than Duron 1600 on socket A that unlocked rest of 256KB of cache and OC to 2100GHz on stock cooler years ago
And an ASRock made most of best balanced mobo for new Phenom II. Even ASUS do not made it so weel (except the high-end mobo's)

 

[Polarman]

X2 --> X4. Is this really true or just a hoax.

 

[z1tu]

X2 --> X4. Is this really true or just a hoax.

Well I think that's the case only if the x2 has the two disabled cores healthy and fully operational... only downside would be the cache I think

 

[phanbuey]

I really do not understand the point of selling 4 good cores, with 2 disabled, for half the price.

I mean, really... is it that hard just to say, hey we got an excess of good quad cores and we really cant harvest anymore dualies... maybe we should just sell a cheaper quad? AMD is losing money on selling healthy quads as harvested chips.

 

[1Kurgan1]

Not really loosing, people are not wasting money on 9950's anymore as they are too close to the PII 710 in price and the 710 is just going to be a better choice. But now cut that price way down and offer it as a bitching dual core that clocks well and you have a whole different market.

Not to mention the old x2's dont stand a chance against Intel Duals, and this gives them something to compete in that range.

What mobo if I may ask, I need to change mine anyways since I can't get past 3 ghz

The Biostar 790GX/SB750, it clocks really well. Need a new cooler though, stock cooler only gets me so far even with extra 120's blowing on it, it just heat soaks after a bit. I can't go over 1.3v, so kinda stuck at 3.3ghz at with 1.296v.

 

[blkhogan]

I have a 7750 in the box sitting right here, also running a Biostar T-series 790GX board. Will give it a shot in the next few days. Might get lucky.

 

[eidairaman1]

It still amazes me the number of people that are suprised to find out that all the processors from a manufacturer use the same die, and just have parts disabled to make lower end processors...

Most of the time is Damaged CPUs, I recall the Conroe 6300, vs Allendale

 

[OnBoard]

Most of the time is Damaged CPUs, I recall the Conroe 6300, vs Allendale

Both are dual cores. E6300=E4300 pretty much, just with different multi and FSB.

 

[p_o_s_pc]

"the motherboard in use is an ASRock A790GX/128M."
wonder if it would work with my Biostar board... maybe i should try the new BIOS and the old one (if the new one doesn't work) when/if i get my 7750

 

[eidairaman1]

Both are dual cores. E6300=E4300 pretty much, just with different multi and FSB.

no no you didnt get it

the Conroe was a 4MB L2 CPU, the 6300/6400 were 2MB L2, they could of been either Conroe or Allendale, Allendale parts were actually formed for the 2MB L2 where Conroe was a Disabled L2- meaning either the L2 is damaged or its good just disabled to sell for the lower market.

 

[Wile E]

I really do not understand the point of selling 4 good cores, with 2 disabled, for half the price.

I mean, really... is it that hard just to say, hey we got an excess of good quad cores and we really cant harvest anymore dualies... maybe we should just sell a cheaper quad? AMD is losing money on selling healthy quads as harvested chips.

Because the bigger market, with higher demand, is the lower end market. If the demand of the dual cores is too high, they have to start disabling good cores to make up for demand. It's basic economics. It's far better to disable the cores and move a ton of product at a reduced price, than it is to just let the low end run out of stock, and still have the lower volume quads also sitting on the shelf.

If they run out of the dual cores, people in that price range aren't going to buy the much more expensive quad, so now they sell neither the dual, nor the quad. Lose-lose for AMD.

 

[Hayder_Master]

what a hell , that's shame on AMD , so at this state how much phenom 940 real cost maybe 120$

 

[kenkickr]

The thing I find funny about the unlocking of cores is it always seems to happen on 2nd rated board manufacteres boards. Man, I wish Asus would screw up on a bios

 

[farlex85]

Quad for under $100, nice. When the 2 other cores are enabled, is their respective L3 cache enabled as well? Or do they use the cache for the other 2 cores?

 

[OnBoard]

the Conroe was a 4MB L2 CPU, the 6300/6400 were 2MB L2, they could of been either Conroe or Allendale, Allendale parts were actually formed for the 2MB L2 where Conroe was a Disabled L2- meaning either the L2 is damaged or its good just disabled to sell for the lower market.

Yeah, the E6300/6400 were the Conroes with damaged cache. But Allendales never had 4MB they were 2MB max and had the E1000 series made from damaged parts.

"E6300 and E6400 CPUs, as well as their Xeon 3040 and 3050 counterparts, have been made using the original 4 MB B2 stepping with half their L2 cache disabled prior to Q1 2007, but using the 2 MB L2 stepping later. This caused contention regarding whether or not the previously available versions were specimens of the Allendale core. Only the newer cores are now commonly referred to as Allendale."

If you talked just about the different steppings of the E6300, then it makes sense. For me Allendale is only E4000 and lower procs (having owned E4300), no-one bought the low multi E6300 after E4300 was out

 

[z1tu]

Quad for under $100, nice. When the 2 other cores are enabled, is their respective L3 cache enabled as well? Or do they use the cache for the other 2 cores?

Well in the photo with the 3dmark testing cpu-z read the same cache as the default 7750... so I'm guessing same cache when unlocked?

 

[farlex85]

Well in the photo with the 3dmark testing cpu-z read the same cache as the default 7750... so I'm guessing same cache when unlocked?

Probably. I would think that would greatly hinder the other 2 cores as well, I mean the cache is fairly limited anyway. A core unable to access cache seems like it would be fairly useless comparatively speaking.

 

[Lo0odak]

And?Any results about 2 more cores for 7750? Tnx.

 

[z1tu]

Probably. I would think that would greatly hinder the other 2 cores as well, I mean the cache is fairly limited anyway. A core unable to access cache seems like it would be fairly useless comparatively speaking.

Well as long as it scores nearly double in 3dmark i'm guessing it performs better than default and that's what matters the most