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Guesses Please: What speeds do you think a B-Grade 7870 will reach?

555BUK

555BUK

555BUK

Soldato
Joined
10 Feb 2007
Posts
3,452
The card has already been received so I know the answers, but how far would you estimate an OcUK sourced B-Grade Gigabyte Windforce X3 7870 will clock with stability?

Here is the card in question.

I won't give any hints until I get a dozen or so estimates. The closest person gets a Kudos award.
edit: Well done to psychodil for guessing really close.

Guess GPU and VRAM max in the following format
SAMPLE - stock speed shown for reference
GPU: 1100MHz
VRAM: 1200MHz (4800).
 
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555BUK said:
The card has already been received so I know the answers, but how far would you estimate an OcUK sourced B-Grade Gigabyte Windforce X3 7870 will clock with stability?

Here is the card in question.

I won't give any hints until I get a dozen or so estimates. The closest person gets a Kudos award. Guess GPU and VRAM max in the following format (stock speeds shown).

(4800).
Click to expand...

how much did u pay for it?

GPU: 1160MHz
VRAM: 1250MHz
 
Would like to know, as I just ordered the last one from the clearance page!

What accessories were missing from the box? Did it come with the free games by any chance?

I'll guess GPU: 1280, VRAM: 1450(5800)? - worried its gonna be zero overclock tho lol
 
I got a 7870 today and overclocking it doesn't change performance or makes games/benchmarks run like ****.

My guess is 1250/1500
 
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uZi said:
Would like to know, as I just ordered the last one from the clearance page!

What accessories were missing from the box? Did it come with the free games by any chance?

I'll guess GPU: 1280, VRAM: 5800? - worried its gonna be zero overclock tho lol
Click to expand...
All accessories included, plus card and box look like new (apart from already being opened). No games.
 
Ah good - not too fussed on the games, but no harm. Hope mine is the same :)

Still wanna know the overclock though!
 
Teaser:
98374317.jpg


Here is a STOCK 7970 for comparison.
HD7970_Stock_1080s.png
 
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555BUK said:
The card has already been received so I know the answers, but how far would you estimate an OcUK sourced B-Grade Gigabyte Windforce X3 7870 will clock with stability?

Here is the card in question.

I won't give any hints until I get a dozen or so estimates. The closest person gets a Kudos award.

Guess GPU and VRAM max in the following format
SAMPLE - stock speed shown for reference
GPU: 1100MHz
VRAM: 1200MHz (4800).
Click to expand...

What's the ASIC? I have a theory. :D
1310MHz Core 1260 Mem
 
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psychodil said:
I'll guess 1325/1550 :p
Click to expand...
You got one correct:D.

edit: oh well, here's the results.

Best completely stable results are 1325MHz core @ 1.3v and 1500MHz mem. On stock volts the GPU goes to 1250MHz. I can benchmark Heaven at 1360MHz and 3DMark11 at 1375MHx, but the card is far from stable at these speeds. The memory appears stable up until 1575MHz, but benchmark scores decrease indicating some error correction.

Here is another Heaven (showing background) and 3DMark11 bench @ 1325/1500.
35009012.jpg


I was expecting a B-Grade card to be a poor clocker, have coil whine, a noisy fan, or be in some way belmished. This one is the exact opposite. I am well happy.

..just a shame it cannot match one of my 7850's that got to 1400MHz for benches:).
 
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ASIC quality is 84%, which matched exactly with the ASIC quality of my "golden" 7850. Seems 84 is my lucky number. All of the other 7800's I have tested have had lower ASIC's (60's and 70's) and clocked significantly lower.

Clock for clock, the 7870's seem about 5-10% faster than 7850's. Heaven seems the best case scenario for the 7870, so if you are on a budget get a 7850.

At 1325/1500 speeds, these cards edge out stock 7970's on similar systems. Of course the 7970's clock much higher as well, and they will also have the edge at higher resolutions, but within most games at reasonable resolutions you wouldn't notice any difference.
 
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LtMatt said:
Why do you buy so many cards 555BUK?
Click to expand...
I have a mini PC factory in my garage. I build systems for friends, family, people at work. At the moment 7850's are my preferred choice of graphics card, but I spotted the B-Grade 7870 for the same price and decided to try that instead. I think that I have now installed and tested 6x 7850's, 2x 7970's, 1x 7870, 1x 7950 and several 7770's from AMD's 7 series lineup. Many people are happy with just the vanilla HD graphics offered by Intel's CPU's, but for those who want to game the 7850 is very popular. I build all of my systems for free, but I reserve the right to cheery pick the best parts for myself:).

Only problem with the Windforce 7870 is that it doesn't fit onto an Asus Maimus V Gene motherboard due to the graphics cards extended heatsink hitting the SATA ports. I had to take a dremel to one corner of the heatsink, so it's just as well the card worked:). The Windforce X3 is a great cooler for this card, perhaps being overkill for such an effficient GPU.
 
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