---

剛逛FB看到HKEPC轉發VideoCardz的報導
英文來源：VideoCardz
https://videocardz.com/newz/up-to-3x-...r-in-games-like-cyberpunk-2077
短網址：
https://reurl.cc/Ry54Dx

原文(韓文)來源：QuasarZone論壇
https://quasarzone.com/bbs/qc_plan/views/34540
短網址：
https://reurl.cc/r6yxnr


VideoCardz報導節錄：

The Frame Generation is part of NVIDIA DLSS 3, and it is only supported by
NVIDIA RTX 40 graphics. AMD’s Fluid Motion Frames technology is part of the
enablement for FSR3 (next-gen upscaling) and HYPR-RX. AMD is working on
enabling its frame generation tech separately as part of their driver
features. Gamers may now enable AFMF per each supported game, but it requires
an AMD driver and GPU present to work.

QuasarZone had a crazy idea to combine both NVIDIA’s and AMD’s frame
generation to the same graphics pipeline. This means that both GPUs will
generate frames and, technically, this should much even higher performance.
Spoiler alert, performance is indeed much higher (in some tests) but there
are issues that may prevent this idea from making much sense.

For starters, to enable FG on both GPUs, two cards are required in the
system. The RX 6600 GPU (like in this case) must be connected to the primary
monitor, and the game has to be rendered on that monitor as well. Users then
must individually select the rendering GPU to RTX 40 graphics (RTX 4090 in
this example).

The way it works, the game is rendered on RTX 4090 which is using its native
DLSS3 FG technology, but the output image is then interpolated by AFMF again,
which increases the average framerate by up to 290% compared to native
resolution. Without AFMF, it would be around 200% in games like Cyberpunk
2077.

======
The improvement in performance is remarkable. Significant enhancements in
average frames per second (FPS) have been achieved. However, the impact on
the bottom 1% FPS performance varies depending on the game. In titles like
Cyberpunk 2077, the application of AFMF has contributed to the improvement of
bottom 1% FPS performance, while in Ratchet & Clank: Rift Apart, it has, on
the contrary, resulted in a decline in bottom 1% FPS.

Conversely, in Call of Duty: Modern Warfare III 2023, the implementation of
AFMF has enhanced the bottom 1% FPS performance, but when used in conjunction
with DLSS 3 FG, there is a slight decrease, showcasing differences across
games.

— QuasarZone
======
As mentioned, this configuration is not without compromises, and it does not
always produce the best experience. The average framerate will increase, but
the number of the slowest frames (1%) may go lower. This metric is often used
to showcase the smoothness of gameplay. In other words, despite an increase
in average framerate, the experience may be worse.

Furthermore, this setup means that two cards are used, so higher power
consumption and exotic GPU setup will enforce full-screen rendering mode, as
AFMF does not work in other modes. The Radeon GPU needs to be at least a
middle-range one because the AFMF uses 90% of the Radeon RX 6600 GPU, so
using cards like the RX 6500 XT might not be enough.

We look forward to seeing how modders and gamers take advantage of this these
technologies in the future. It is extremely unlikely that AMD and NVIDIA will
ever work together to combine their technologies, either officially or
unofficially. Moreover, the artificial doubling of already interpolated
frames will almost certainly introduce more graphics glitches. For science,
however, this seems like a very interesting thing to test.

大意：
韓國人使用RTX 4090 + RX 6600雙卡配置
同時使用N卡FG+A卡AFMF雙補幀 大幅提升遊戲幀數
https://i.imgur.com/zbSwzWg.jpg
4090負責渲染遊戲+DLSS3 FG補幀
6600負責AFMF補幀+輸出畫面
設置方法：
跑遊戲的螢幕要插在A卡上
Windows設定內要指定用N卡跑遊戲
A卡驅動內開啟AFMF選項
遊戲要跑在全螢幕 因為AFMF目前只支援全螢幕遊玩
全視窗、視窗化、無邊界模式都不支援

幀數提升可以參考韓文論壇
https://i.imgur.com/7NSQscx.png
https://i.imgur.com/7eR1Xk5.png
在2077中
平均幀提升291%
1%最低幀提升147%

不過要注意雖然平均幀上升 但有些遊戲的1%幀反而降低
所以遊戲體驗不一定更好
例如COD MW3的1%最低幀在開啟雙補幀後反而略降
https://i.imgur.com/pD19nCG.png
https://i.imgur.com/asGvFwa.png

結論：
https://i.imgur.com/M31NwVE.png
真的有用，但有幾個注意事項/缺點
-不是每個遊戲都更順暢 有些的1%幀反而降低
-AFMF在鏡頭快速變動時會關閉，這點在FG+AFMF也一樣
-韓國作者建議使用支援PCIe x16拆分x8/x8的主機板
-4K遊玩下RX6600沒開AFMF就已經使用40%，開啟後使用率達90%
 加上作者用6500XT除了效能低落外還遇到閃退重開等穩定性問題
 因此建議使用6600以上的A卡

-
一個補幀不夠 你有試過用兩個嗎XD
感覺很像A卡以前的FM 也是可以N+A雙卡配置
N卡拿來跑遊戲 A卡負責輸出跟影片補幀 只是現在是補遊戲
我大二組第一台電腦也是裝N+A
不過可能是驅動打架的緣故常常藍屏
加上對我而言實用度不高
後來就改回單卡設置了
韓國作者也提到這玩法的效益問題
畢竟要考慮驅動、主板相容性
以及多插一張卡而增加的功耗等等
值不值得這樣玩就看個人了

--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 118.231.200.199 (臺灣)
※ 作者: E7lijah 2023-12-02 00:26:10
※ 文章代碼(AID): #1bQWadSX (PC_Shopping)
※ 文章網址: https://www.ptt.cc/bbs/PC_Shopping/M.1701447975.A.721.html

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