AMD’s Radeon HD 5770 & 5750: DirectX 11 for the Mainstream Crowd
by Ryan Smith on October 13, 2009 12:00 AM EST- Posted in
- GPUs
BattleForge
BattleForge is EA’s card-based online-only RTS. As the first DirectX11 title it’s of particular importance for the latest rendition of DirectX, although in this case we aren’t using any features that would be impacted by it. Even without ambient occlusion, BattleForge manages to be a rather punishing game for GPUs.
BattleForge is another game that punishes the 5700 series. The performance hit coming from the 4870 starts at 25% at 1680, and ends at just 18% at 2560. This also means that the 5770 loses to the GTX 260.
As for the 5750, it loses at 1680 by 7%, but eeks out a very slight win at 1920. Apparently being memory bandwidth starved isn’t so bad when your competitor is too.
Finally, this gives us one of the larger gaps between the 5770 and 5850. $100 buys you 60%-70% more performance.
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GrizzlyAdams - Tuesday, October 13, 2009 - link
That may be due to some architectural improvements in the 5770's shaders. The drop in performance in other games may be due to the decreased memory bandwidth, which may not matter with regards to Far Cry 2.papapapapapapapababy - Tuesday, October 13, 2009 - link
this cards are super lame... 5750, now with +80 stream processors ! XD that 5750 is basically a ( lower clocked!) 4770... guess what ati? that cost me $85 bucks 6 months ago! but who cares right? nvidia is dead so why bother? just slap a dx11 sticker, rice the price ati?The0ne - Tuesday, October 13, 2009 - link
Just wanted to say I like the conclusion and it's dead spot on on the suggestions and advices.I'm very surprise almost no one is talking or bringing up the subject of DirectX. DX11 has more chance to succeed yet less attention. It's amazing how badly DX10 was to sway consumers about face.
kmmatney - Tuesday, October 13, 2009 - link
The problem with DX10 was that you had to buy Vista to get it...MadMan007 - Tuesday, October 13, 2009 - link
DX10 rendering paths of games that were also DX9 (meaning all of them at the time and even now) were also *slower* and provided little to no i.q. improvements. So even if it hadn't been Vista-only (and only morans keep on with the Vista FUD after SP1) there was no real benefit. DX11 looks to be different in all respects.Lifted - Wednesday, October 14, 2009 - link
Yeah, get a brain!http://24ahead.com/images/get-a-brain-morans.jpg">http://24ahead.com/images/get-a-brain-morans.jpg
Zool - Tuesday, October 13, 2009 - link
Quite strange that with die size 166mm2 againts 260mm2(rv770) and with 128bit memmory it costs this much. And the 5750 has disabled one simd which even increase the amount of usable chips (but maybe its disabled just for the diference or else the two cards would be exatly the same except clocks).The Tessellation part with fixed units is exatly the same as 5800 series or tuned down ?
philosofool - Wednesday, October 14, 2009 - link
I chalk it up to lowish 40nm yields at TSMC.Spoelie - Wednesday, October 14, 2009 - link
+ higher cost per wafer as a 55nm one+ ddr5 prices
Mint - Tuesday, October 13, 2009 - link
Unless you absolutely need to take advantage of the lower power requirements of the 40nm process (e.g. you pay a ton for power)...According to your tests, the 5770 consumes a whopping 48W less idle power than the 4870, and other reviews have comparable results. If your computer is out of standby a modest 10 hours a day, that works out to 175 kWh per year. That's easily $15/year even for people with cheap electricity.
The funny thing is that I usually see people overstating the savings from power efficiency...