HD5770 & HD5750 pictures & benchmarks

[cbn]

http://vr-zone.com/articles/juniper...-and-juniper-le-is-hd-5750/7626.html?doc=7626

I don't see how HD5770 would be 1.6x faster than HD4770 if retains the same 128 bit bus as the HD5750.

As far as HD5750 goes......1120 stream processors on 128 bit bus seems like a waste of its potential (even if the GDDR5 is running 1150 MHz)

If HD5770 has a 256 bit this should really help make the most of its 1120 stream processors.

 

[Sherdogger]

What would be the disadvantage of a 128-bit bus memory? Maybe this card would give lower framerates at high resolutions such as 1900 X 1080 and higher? Would the 5750 still be able to give high frame rates with all graphic options maxed out at 1440 X 900?

Just wondering if the 5750 is a good buy for my monitor with native res of 1440 X 900, since I feel that 5800 series is overkill at that resolution. I'm looking for something that is relatively future proof that can run Dìablo 3 maxed out when it comes out at 1440 X 900.

The fact that it might be worse than the 4870 makes me doubt if I want to purchase the 5750.

 

[cbn]

Originally posted by: Sherdogger
What would be the disadvantage of a 128-bit bus memory? Maybe this card would give lower framerates at high resolutions such as 1900 X 1080 and higher? Would the 5750 still be able to give high frame rates with all graphic options maxed out at 1440 X 900?

Just wondering if the 5750 is a good buy for my monitor with native res of 1440 X 900, since I feel that 5800 series is overkill at that resolution. I'm looking for something that is relatively future proof that can run Dìablo 3 maxed out when it comes out at 1440 X 900.

The fact that it might be worse than the 4870 makes me doubt if I want to purchase the 5750.

1120 stream processors @700 Mhz seesm like a lot of processing power to me.....this means that computational times from the Video card can be very low.

But then what happens when AA/AF/detail settings are turned up? If that memory bandwidth gets exceeded at any particular point then frame rates will drop regardless of total GPU power right?

Something like HD5750 will probably work well for maintaining frame rates as long as detail settings are kept relatively low. But then sometimes I wonder what is the point of this? Another cheaper card could have done exactly the same thing.

 

[MODEL3]

Originally posted by: Just learning
1120 stream processors @700 Mhz seesm like a lot of processing power to me.....this means that computational times from the Video card can be very low.

But then what happens when AA/AF/detail settings are turned up? If that memory bandwidth gets exceeded at any particular point then frame rates will drop regardless of total GPU power right?

Something like HD5750 will probably work well for maintaining frame rates as long as detail settings are kept relatively low. But then sometimes I wonder what is the point of this? Another cheaper card could have done exactly the same thing.

According to mymypc site and Ryan's review (AT) the 5770 is going to be 14SIMD design (56TU/1120SP).

The card that mymypc site reviewed (if it isn't fake post for hits) it is a 5750. (700MHz)

The thing is that if you check the 3Dmark Vantage scores the card is a 10 SIMD design clearly. (40TU/800SP). (-4 SIMDs)

So from a financial point of view it doesn't make sense.

Also for such a low priced part the memory clock (1150MHz GDDR5) is high...

For a 700MHz 10SIMD design 1GB 128 bit mem con 5750, ATI must ask 129$. (if the 48X0 stock is limited)

 

[cbn]

Originally posted by: MODEL3

Originally posted by: Just learning
1120 stream processors @700 Mhz seesm like a lot of processing power to me.....this means that computational times from the Video card can be very low.

But then what happens when AA/AF/detail settings are turned up? If that memory bandwidth gets exceeded at any particular point then frame rates will drop regardless of total GPU power right?

Something like HD5750 will probably work well for maintaining frame rates as long as detail settings are kept relatively low. But then sometimes I wonder what is the point of this? Another cheaper card could have done exactly the same thing.

According to mymypc site and Ryan's review (AT) the 5770 is going to be 14SIMD design (56TU/1120SP).

The card that mymypc site reviewed (if it isn't fake post for hits) it is a 5750. (700MHz)

The thing is that if you check the 3Dmark Vantage scores the card is a 10 SIMD design clearly. (40TU/800SP). (-4 SIMDs)

So from a financial point of view it doesn't make sense.

Also for such a low priced part the memory clock (1150MHz GDDR5) is high...

For a 700MHz 10SIMD design 1GB 128 bit mem con 5750, ATI must ask 129$. (if the 48X0 stock is limited)

800 stream processors @ 700 Mhz with 128 bit 1150 Mhz GDD5 makes more sense.

I also agree with you that this card should be more like $129 dollars.

 

[cbn]

If the 5770 is going to be 56TUs/1120SPs design, why the 50 part is so severely butchered?
(-320SP)

This doesn't really add up does it?

 

[cbn]

http://www.hexus.net/content/item.php?item=20537

At the bottom of this article one responder is claiming hd5750 has 960 stream processors?

 

[MODEL3]

Originally posted by: Just learning

If the 5770 is going to be 56TUs/1120SPs design, why the 50 part is so severely butchered?
(-320SP)

This doesn't really add up does it?

No it doesn't.
The logic thing is to be something like -2 SIMD (-8TU/-160SPs)
That's is one of the reasons the mymypc review is fishy.

 

[MODEL3]

Originally posted by: Just learning
http://www.hexus.net/content/item.php?item=20537

At the bottom of this article one responder is claiming hd5750 has 960 stream processors?

The real 5750 could be 960SP.
The card that mymypc tested is not 960SP, it is 800SP. (according to the 3dMark Vantage scores that mymypc gave)

It is very easy to verify if you check the 5870/4850/4870/4770 3dMark Vantage scores and correlate.

The logic that alwayssts used:

"What is 960 @ 700mhz? IT'S EXACTLY THE SAME AS 4890, which is 800 @ 850mhz.*
Both are ~1.35TF."

to correlate the performance is extremely simplistic and is leading in wrong results.

You have to do the correlation per score for all the cards (5870 / 4850 / 4870 / 4770 / 5750) and you will see that the design is 10 SIMD.

 

[cbn]

Originally posted by: MODEL3

Originally posted by: Just learning
http://www.hexus.net/content/item.php?item=20537

At the bottom of this article one responder is claiming hd5750 has 960 stream processors?

The real 5750 could be 960SP.
The card that mymypc tested is not 960SP, it is 800SP. (according to the 3dMark Vantage scores that mymypc gave)

It is very easy to verify if you check the 5870/4850/4870/4770 3dMark Vantage scores and correlate.

The logic that alwayssts used:

"What is 960 @ 700mhz? IT'S EXACTLY THE SAME AS 4890, which is 800 @ 850mhz.*
Both are ~1.35TF."

to correlate the performance is extremely simplistic and is leading in wrong results.

You have to do the correlation per score for all the cards (5870 / 4850 / 4870 / 4770 / 5750) and you will see that the design is 10 SIMD.

Isn't Juniper supposed to be 180mm2?

If so I am having a hard timing believing in 1120 stream processors or even 960 stream processors.

800 stream processors makes more sense.

But how to get 1.6x the performance of Hd4770 for hd5770?

1.2x the performance of hd4770 for hd5750 seems easy though.....800 stream processors @ 700 Mhz would do that.

 

[bunnyfubbles]

Rumored specs and prices are too all over the place to make any sort of decent judgment right now, we really need some more/better information.

1120 SPs, 56 TMUs, 24 ROPs @ ~800+MHz and a 256bit bus with 1000+MHz GDDR5 would be absolutely killer @ $199 for a 5770, but right now it really does seem like it will be a 128bit bus, and whats worse is that the GPU might not even be that great either.

However the one thing that is certain is that if the price points of $149 and $199 are true, the performance of these cards needs to be on par if not superior to the 4870 (vs. 5750) and 4890 (vs. 5770) nearly across the board, and I'm sure that's where a lot of concerns lie with the 128bit bus.