[LR] AMD releasing 7770 1Ghz Radeon shortly with 'Verdetrol'

[busydude]

I believe the 5770/6770 to 6790 showed that the 128 bit bus wasn't a big bottleneck.

ABT did some work on the bottleneck thing.. they found out that it is not bandwidth starved at all.

 

[Arzachel]

ABT did some work on the bottleneck thing.. they found out that it is not bandwidth starved at all.

That's wierd, the only difference between the 5770 and the 4870 is the memory bandwidth and that the 5770 is clocked 100 mhz higher. The 4870 still beat the 5770 in most benches.

 

[LOL_Wut_Axel]

That's wierd, the only difference between the 5770 and the 4870 is the memory bandwidth and that the 5770 is clocked 100 mhz higher. The 4870 still beat the 5770 in most benches.

By around 5%, and with newer drivers I wouldn't be surprised if the 5770 ended up being 5% faster in DX10 games. Regardless, it's a very minuscule difference.

Remember that the 4870 consumed around twice the power, too.

 

[boxleitnerb]

Not impressed. Theses numbers would make the 7770 only 25% faster than the 6770.

 

[blackened23]

Not impressed. Theses numbers would make the 7770 only 25% faster than the 6770.

But the TDP is sick! So good for HTPCs 🙂

 

[formulav8]

what is the average power consumption? is it confirmed?

 

[busydude]

That's wierd, the only difference between the 5770 and the 4870 is the memory bandwidth and that the 5770 is clocked 100 mhz higher. The 4870 still beat the 5770 in most benches.

That is not the only difference. Although 5770 and 4870 carry the same specs, 5770 is slower than 4870 on clock-for-clock basis. I think Anand did a write up on it.. I cannot find the link, but the shaders in Juniper cores are slower than the shaders in RV770.

 

[formulav8]

Yes the 5xxx series shaders are weaker than the 4xxx series shaders. It also depends on the res and settings as to who is faster of the two.

 

[blackened23]

what is the average power consumption? is it confirmed?

7770 is 80W max IIRC, while the 7750 is 60W. Performance comparable to 560ti 384 or slightly slower than the 6870...

 

[Arzachel]

That is not the only difference. Although 5770 and 4870 carry the same specs, 5770 is slower than 4870 on clock-for-clock basis. I think Anand did a write up on it.. I cannot find the link, but the shaders in Juniper cores are slower than the shaders in RV770.

Thanks for the tip, didn't know that. Yeah, the additional bandwidth isn't that vital then.

7770 is 80W max IIRC, while the 7750 is 60W. Performance comparable to 560ti 384 or slightly slower than the 6870...

You mean the 550ti, right?


Anyways, I'd love to see these chips in some laptops. Kinda fed up how every midrange laptop has GPU's ranging from horrific to underwhelming.

 

[Skurge]

7770 is 80W max IIRC, while the 7750 is 60W. Performance comparable to 560ti 384 or slightly slower than the 6870...

I'm sorry, but this doesn't make sense. The 560Ti is a bit faster than the 6870. There is no way a 7770 will be faster than a 560Ti.

 

[blackened23]

I'm sorry, but this doesn't make sense. The 560Ti is a bit faster than the 6870. There is no way a 7770 will be faster than a 560Ti.

550ti, rather.

 

[Arkadrel]

I'm sorry, but this doesn't make sense. The 560Ti is a bit faster than the 6870. There is no way a 7770 will be faster than a 560Ti.

or 5% or so slower ^-^.

That said your right, going by rumors the 7770 wont be faster than a 560ti.

The 448 version is faster than the 6870... the 336 version is not.

550ti, rather.

Ofc the 7770 will be faster 😛 even the 5770 is faster than the 550ti.

 

[96Firebird]

or 5% or so slower ^-^.

I see the 560Ti at 109%, and the 6870 at 105%...

 

[Skurge]

or 5% or so slower ^-^.

That said your right, going by rumors the 7770 wont be faster than a 560ti.

The 448 version is faster than the 6870... the 336 version is not.



Ofc the 7770 will be faster 😛 even the 5770 is faster than the 550ti.

The 560Ti is faster on that chart. You're looking at the 560 non Ti.

 

[blackened23]

What is this , an epic epeen match over the 560ti and 7770 ? Sorry, I meant 550ti or 560 (plain), here are the full specs

Cape Verde Physical

Built on TSMC 28 nm process, ~1.5 billion transistors
10 Graphics CoreNext Compute Units (CUs)
640 stream processors
40 TMUs, 16 ROPs
128-bit wide GDDR5 memory interface




Radeon HD 7770

All CUs enabled, 640 stream processors
1 GB GDDR5 memory
40 TMUs, 16 ROPs
1000 MHz core clock-speed
1125 MHz (actual), 4500 MHz (effective) memory clock-speed
72 GB/s memory bandwidth
1280 GFLOP/s single-precision floating-point performance
Typical board power: 80W



Radeon HD 7750

8 CUs enabled, 512 stream processors
1 GB GDDR5 memory
32 TMUs, 16 ROPs
800 MHz core clock-speed
1125 MHz (actual), 4500 MHz (effective) memory clock-speed
72 GB/s memory bandwidth
819 GFLOP/s single-precision floating-point performance
Typical board power: 55W

The TDP is stunning, that is less than half of the 560ti or 6870, the 7770 only uses 1 6 pin connector. This is perfect for HTPC's, although I don't see a need to upgrade my own anytime soon.

 

[Arkadrel]

*self facepalm*

Sorry bout that... gots confused there >_>

I hate those -Ti, SE, GT,GTX,GSO, ect extras.
AMD probably does it as well... I still hate it.

They should stick with numbers, and if cards are differnt, just give them a tiny # increase.
Like a 565 or something instead, of 560ti.

 

[WMD]

By around 5%, and with newer drivers I wouldn't be surprised if the 5770 ended up being 5% faster in DX10 games. Regardless, it's a very minuscule difference.

Remember that the 4870 consumed around twice the power, too.

This "new driver argument" surfaced since the 5770 release and haven't been realized since. There are games where the 5770 is a hair faster. But most of the time the 4870 1GB is faster and sometimes up to 20%.

 

[Concillian]

I believe the 5770/6770 to 6790 showed that the 128 bit bus wasn't a big bottleneck. That was the only main difference between the two cards iirc (6790 was barts based but not a huge clock-for-clock increase over the 5770).

So I don't think the 128bit bus will kill the performance to aweful much. Although the high-end gcn does seem to love more memory bandwidth? People ocing 7970's ram are getting continuous performance increases??

I don't know, I haven't been keeping up on the 7970's since I can't find a reason to buy one. 🙁

The AT benches are showing only 10% difference from 5770 to 6790 on the average, but the minimums are closer to 20-30%. This means any improvement is happening where it is most important... on the dips.

I think this demonstrates that bandwidth is limiting to some extent.... though not offering nearly as much improvement as a 6870 that nearly doubles the ROP and adds 10% more shader processing power.

This seems to indicate that the ROP performance is pretty significant. 7770 ROP vs. 6850 (if we assume GCN gets a 20% efficiency bonus), the 7770 is about 25% lower. Can that be made up with 44% more shader processing power when it's bandwidth is also 80% lower? We'll see, but I suspect the 7770 will be well behind the 6850 on minimum FPS even if it can keep up on the averages.

 

[LOL_Wut_Axel]

This "new driver argument" surfaced since the 5770 release and haven't been realized since. There are games where the 5770 is a hair faster. But most of the time the 4870 1GB is faster and sometimes up to 20%.

2% faster at 1680x1050 and 0% faster at 1920x1200. The 4870 is so much faster, OMG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[skipsneeky2]

The 7700 looks like a excellent entry video card.

80tdp isn't much i would think most oem computers shouldn't have a issue running this card and it appears to have better then 6770 performance making it even better as a entry level card.

But i do fear with that low of a tdp its retail suggested price is gonna be out of this world,i will gamble about $130 msrp.

 

[WMD]

2% faster at 1680x1050 and 0% faster at 1920x1200. The 4870 is so much faster, OMG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Nice try using TPU results. They use a 512mb 4870 and what you are seeing is simply the how games choked on 512mb VRAM.

With AA/AF a 4870 1GB can be up to 30% faster than the 5770

http://ht4u.net/reviews/2011/grafikkarten-vergleich_amd_nvidia_benchmarks_test/index6.php

http://ht4u.net/reviews/2011/grafikkarten-vergleich_amd_nvidia_benchmarks_test/index5.php

 

[LOL_Wut_Axel]

Nice try using TPU results. They use a 512mb 4870 and what you are seeing is simply the how games choked on 512mb VRAM.

With AA/AF a 4870 1GB can be up to 30% faster than the 5770

http://ht4u.net/reviews/2011/grafikkarten-vergleich_amd_nvidia_benchmarks_test/index6.php

http://ht4u.net/reviews/2011/grafikkarten-vergleich_amd_nvidia_benchmarks_test/index5.php

Nitpicking benchmarks. My favorite game!!!

Oh, never mind the fact that the 4870 runs out of steam well before it can exploit more than 512MB of VRAM. And never mind the fact that the target resolution for the card is 1680x1050 nowadays anyway, meaning a larger framebuffer would go unneeded if it were a faster card.

 

[96Firebird]

Nitpicking benchmarks. My favorite game!!!

How is it nitpicking benchmarks when it says right in the post you quoted 4870 1GB? Its not like he left out the memory size and it came as a shock to you he was talking about the 4870 1GB...

 

[busydude]

And never mind the fact that the target resolution for the card is 1680x1050 nowadays anyway, meaning a larger framebuffer would go unneeded if it were a faster card.

For modern games, no.