Powercolor 7990 back in stock

[mdude77]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

[greaterninja]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

this is the old 7990, not the new 7990 malta..i would not pay $1000 for this as it under-performs the new 7990 maltas.

[mdude77]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

this is the old 7990, not the new 7990 malta..i would not pay $1000 for this as it under-performs the new 7990 maltas.

I heard the new ones don't mine so well.

M

[goxed]

The old one is a real workhorse. But the price is bumped by $100 It used to sell for $900

[mdude77]

The old one is a real workhorse. But the price is bumped by $100 It used to sell for $900

Probably because there aren't going to be many more of them, now with the official one due out soon.

M

[greaterninja]

The old one is a real workhorse. But the price is bumped by $100 It used to sell for $900

Probably because there aren't going to be many more of them, now with the official one due out soon.

M

i actually heard the new malta 7990 mines ~1250MH/s

was on a german website / blog

i plan on buying a saphire or new powercolor 7990 malta..will let u guys know when i get it .

[2D]

Does anybody have the new reference (Malta?) 7990s in stock? They seem to be sold out everywhere.

[greaterninja]

Does anybody have the new reference (Malta?) 7990s in stock? They seem to be sold out everywhere.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814150669


XFX 7990 MALTA now in stock!


went out of stock in 5 min...LOL

[dogie]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

this is the old 7990, not the new 7990 malta..i would not pay $1000 for this as it under-performs the new 7990 maltas.

No, no it doesn't. Identical cores, identical specs. This new one just has way worse cooling and is power limited to 375W. It can NOT mine scrypt.

[greaterninja]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

this is the old 7990, not the new 7990 malta..i would not pay $1000 for this as it under-performs the new 7990 maltas.

No, no it doesn't. Identical cores, identical specs. This new one just has way worse cooling and is power limited to 375W. It can NOT mine scrypt.

yes identical tahiti cores, but not same specs.  the new one is clocked higher than the old one by at least 25mhz each core.

what sources do you have to say the new one has worse cooling?   tomshardware and a few other websites say the new one has much better cooling.  it boggles my mind why a new card that came out about a year after the first 7990 would have poorer cooling.  So please provide evidence.

[dogie]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

this is the old 7990, not the new 7990 malta..i would not pay $1000 for this as it under-performs the new 7990 maltas.

No, no it doesn't. Identical cores, identical specs. This new one just has way worse cooling and is power limited to 375W. It can NOT mine scrypt.

yes identical tahiti cores, but not same specs.  the new one is clocked higher than the old one by at least 25mhz each core.

what sources do you have to say the new one has worse cooling?   tomshardware and a few other websites say the new one has much better cooling.  it boggles my mind why a new card that came out about a year after the first 7990 would have poorer cooling.  So please provide evidence.

Who cares about stock clocks when you're spending $1k :/ We all buy 800-900Mhz 7950s and slap them at 1100.
Full comparison was done here: https://109.201.133.65/index.php?topic=187328.0

[greaterninja]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

this is the old 7990, not the new 7990 malta..i would not pay $1000 for this as it under-performs the new 7990 maltas.

No, no it doesn't. Identical cores, identical specs. This new one just has way worse cooling and is power limited to 375W. It can NOT mine scrypt.

yes identical tahiti cores, but not same specs.  the new one is clocked higher than the old one by at least 25mhz each core.

what sources do you have to say the new one has worse cooling?   tomshardware and a few other websites say the new one has much better cooling.  it boggles my mind why a new card that came out about a year after the first 7990 would have poorer cooling.  So please provide evidence.

Who cares about stock clocks when you're spending $1k :/ We all buy 800-900Mhz 7950s and slap them at 1100.
Full comparison was done here: https://109.201.133.65/index.php?topic=187328.0

Oh dogie,  where do I even start?   Your thread only states pre 7990 numbers and what you think theoretical new 7990 #s are?      If you are gonna do a unbiased and factual review, get numbers for both sets of hardware:  In this case 7990 pre malta and 7990 malta (new).   You only have real #s for 7990 pre malta and the other numbers are what you theorize / speculate they will be for a new 7990 malta.  This creates a huge lack of credibility in my mind.

[dogie]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

this is the old 7990, not the new 7990 malta..i would not pay $1000 for this as it under-performs the new 7990 maltas.

No, no it doesn't. Identical cores, identical specs. This new one just has way worse cooling and is power limited to 375W. It can NOT mine scrypt.

yes identical tahiti cores, but not same specs.  the new one is clocked higher than the old one by at least 25mhz each core.

what sources do you have to say the new one has worse cooling?   tomshardware and a few other websites say the new one has much better cooling.  it boggles my mind why a new card that came out about a year after the first 7990 would have poorer cooling.  So please provide evidence.

Who cares about stock clocks when you're spending $1k :/ We all buy 800-900Mhz 7950s and slap them at 1100.
Full comparison was done here: https://109.201.133.65/index.php?topic=187328.0

Oh dogie,  where do I even start?   Your thread only states pre 7990 numbers and what you think theoretical new 7990 #s are?      If you are gonna do a unbiased and factual review, get numbers for both sets of hardware:  In this case 7990 pre malta and 7990 malta (new).   You only have real #s for 7990 pre malta and the other numbers are what you theorize / speculate they will be for a new 7990 malta.  This creates a huge lack of credibility in my mind.

Its common sense.... I'll state it step by step for you though...
1) The cores are IDENTICAL. Stock clocks are different, but clock for clock identical.
2) Because they are identical, power consumption is going to be VERY close. +/- 15W.
3) Hence, clock for clock these hash identically.
4) The cooling solutions are designed for their TDP. One has a TDP of 375W and one at 525W.

What more do you want? Why would I spend $2k on these shit cards just to prove you wrong?

[mdude77]

Its common sense.... I'll state it step by step for you though...
1) The cores are IDENTICAL. Stock clocks are different, but clock for clock identical.
2) Because they are identical, power consumption is going to be VERY close. +/- 15W.
3) Hence, clock for clock these hash identically.
4) The cooling solutions are designed for their TDP. One has a TDP of 375W and one at 525W.

What more do you want? Why would I spend $2k on these shit cards just to prove you wrong?

I don't understand how the power usage could be identical when the "unofficial" 7990s use three 8pin PCIX power connectors, and the new one only two?  I had one of the powercolor ones, it said it needed a minimum powersupply of 850w.  (It was right, BTW, it wouldn't start on a 750.)  The new XFX one is 750?

M

[dogie]

Its common sense.... I'll state it step by step for you though...
1) The cores are IDENTICAL. Stock clocks are different, but clock for clock identical.
2) Because they are identical, power consumption is going to be VERY close. +/- 15W.
3) Hence, clock for clock these hash identically.
4) The cooling solutions are designed for their TDP. One has a TDP of 375W and one at 525W.

What more do you want? Why would I spend $2k on these shit cards just to prove you wrong?

I don't understand how the power usage could be identical when the "unofficial" 7990s use three 8pin PCIX power connectors, and the new one only two?  I had one of the powercolor ones, it said it needed a minimum powersupply of 850w.  (It was right, BTW, it wouldn't start on a 750.)  The new XFX one is 750?

M

Because the maximum power delivery and the maximum heat dissipation are not the same as maximum power draw! They are 3 different things.

1) Maximum power delivery, how much power the infrastructure on the card can give to the chips. The old 7990s was 525W [75W PCI-E slot, 3x150W 8 pin PCI-E connectors] and the new ones 375W [75W PCI-E slot, 2x150W 8 pin PCI-E connectors]
2) Maximum heat dissipation. This is purely how much heat the cooling mechanism can remove from the chips, given certain ambient conditions. Old was 525W, new is 375W. Please note that while 1) and 2) match up in numbers, they are different variables. They are typically lined up because there is no point cooling more than the card could ever use [waste of material] and no point delivering more power than the card could ever cool [dangerous].
3) Maximum power draw. This is how much the chips could physically use. There is no point delivering more power, because the chips don't need that much. It would be like a pool spamming a billion packets at your miner when it only goes through 10 a minute.

I can see why you thought that the new cards were better because they 'used less power', but in fact they're worse because they can delivery and cool less power. The power draw (consumption) of the actual chips is the same - AMD is now just saving costs to reduce the overhead on the power delivery. The fatal flaw with this is at high computation loads, esp scypt, esp with overclocking, the power draw > power delivery.

And so the card power throttles.

[mdude77]

Its common sense.... I'll state it step by step for you though...
1) The cores are IDENTICAL. Stock clocks are different, but clock for clock identical.
2) Because they are identical, power consumption is going to be VERY close. +/- 15W.
3) Hence, clock for clock these hash identically.
4) The cooling solutions are designed for their TDP. One has a TDP of 375W and one at 525W.

What more do you want? Why would I spend $2k on these shit cards just to prove you wrong?

I don't understand how the power usage could be identical when the "unofficial" 7990s use three 8pin PCIX power connectors, and the new one only two?  I had one of the powercolor ones, it said it needed a minimum powersupply of 850w.  (It was right, BTW, it wouldn't start on a 750.)  The new XFX one is 750?

M

Because the maximum power delivery and the maximum heat dissipation are not the same as maximum power draw! They are 3 different things.

1) Maximum power delivery, how much power the infrastructure on the card can give to the chips. The old 7990s was 525W [75W PCI-E slot, 3x150W 8 pin PCI-E connectors] and the new ones 375W [75W PCI-E slot, 2x150W 8 pin PCI-E connectors]
2) Maximum heat dissipation. This is purely how much heat the cooling mechanism can remove from the chips, given certain ambient conditions. Old was 525W, new is 375W. Please note that while 1) and 2) match up in numbers, they are different variables. They are typically lined up because there is no point cooling more than the card could ever use [waste of material] and no point delivering more power than the card could ever cool [dangerous].
3) Maximum power draw. This is how much the chips could physically use. There is no point delivering more power, because the chips don't need that much. It would be like a pool spamming a billion packets at your miner when it only goes through 10 a minute.

I can see why you thought that the new cards were better because they 'used less power', but in fact they're worse because they can delivery and cool less power. The power draw (consumption) of the actual chips is the same - AMD is now just saving costs to reduce the overhead on the power delivery. The fatal flaw with this is at high computation loads, esp scypt, esp with overclocking, the power draw > power delivery.

And so the card power throttles.

I think you're mixing me up with someone else.  I'm the one who said "I thought others had said the new card doesn't mine as well".

M

[dogie]

I think you're mixing me up with someone else.  I'm the one who said "I thought others had said the new card doesn't mine as well".

M

Yes sorry, ended up answering both of you.

[2D]

Yeah screw this. As much as I'd love to have a 7990, I think a couple 7950s are more obtainable and will mine just as well.

[greaterninja]

Sure to be gone soon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483

Tips: 1PUzQWFq4ia2eRyTVYRYyWFihaqtJFw8WN



M

this is the old 7990, not the new 7990 malta..i would not pay $1000 for this as it under-performs the new 7990 maltas.

No, no it doesn't. Identical cores, identical specs. This new one just has way worse cooling and is power limited to 375W. It can NOT mine scrypt.

yes identical tahiti cores, but not same specs.  the new one is clocked higher than the old one by at least 25mhz each core.

what sources do you have to say the new one has worse cooling?   tomshardware and a few other websites say the new one has much better cooling.  it boggles my mind why a new card that came out about a year after the first 7990 would have poorer cooling.  So please provide evidence.

Who cares about stock clocks when you're spending $1k :/ We all buy 800-900Mhz 7950s and slap them at 1100.
Full comparison was done here: https://109.201.133.65/index.php?topic=187328.0

Oh dogie,  where do I even start?   Your thread only states pre 7990 numbers and what you think theoretical new 7990 #s are?      If you are gonna do a unbiased and factual review, get numbers for both sets of hardware:  In this case 7990 pre malta and 7990 malta (new).   You only have real #s for 7990 pre malta and the other numbers are what you theorize / speculate they will be for a new 7990 malta.  This creates a huge lack of credibility in my mind.

Its common sense.... I'll state it step by step for you though...
1) The cores are IDENTICAL. Stock clocks are different, but clock for clock identical.
2) Because they are identical, power consumption is going to be VERY close. +/- 15W.
3) Hence, clock for clock these hash identically.
4) The cooling solutions are designed for their TDP. One has a TDP of 375W and one at 525W.

What more do you want? Why would I spend $2k on these shit cards just to prove you wrong?

I'm not the moron who thinks power usage and cooling is the same.   7990 malta uses 375-389watts at full load for both cores total.
The 7990 Malta runs cooler than previous 7990, so again you are wrong.
If a card runs cooler then it will clock even the same core higher simply if the design makes it run cooler.  This means that hashrate will be higher.  DURR?
Also the cards sell for $900-$1100, not $2000.  So again you are wrong.

Finally go look at tomshardware, guru3d and anaandtech for reviews before you go spouting off that you are right.
You give bad advice and information to the community when you just start blowing numbers  and misleading information out your ass.

links below to re-educate yourself.

http://www.tomshardware.com/reviews/radeon-hd-7990-review-benchmark,3486.html
http://www.anandtech.com/show/6915/amd-radeon-hd-7990-review-7990-gets-official
http://www.guru3d.com/articles_pages/radeon_hd_7990_review,8.html

[mdude77]

Devil 7990 back in stock...


http://www.newegg.com/Product/Product.aspx?Item=N82E16814131479


M