Question "RTX 4070 Ti Super vs. RX 9070 XT: Gamma Slider vs. 12VHPWR Fear – Need Advice

[Samuel-212]

I’m torn between the RTX 4070 Ti Super and RX 9070 XT for my 3440x1440 setup, and two major issues are holding me back:

1. RX 9070 XT’s Lack of Per-Channel Gamma Control
   
   • I rely on gamma adjustments (especially for red/blue/green channels) for color accuracy in games, browsing, and creative work.
   • AMD’s Adrenalin lacks this feature, and Windows HDR calibration is system-wide (not per-channel).
   • Question: Are there global workarounds to tweak per-channel gamma without needing per-game fixes?
2. RTX 4070 Ti Super’s 12VHPWR Connector Anxiety
   
   • I’m wary of melting issues, even with the revised 12V-2×6 (H++) connector.
   • My PSU is a Corsair CX750 RGB (no native 12VHPWR), so I’d need to use the included adapter.
   • Question: How real is the risk in 2024?

Leaning Toward:
The RX 9070 XT (for its 8-pin power and raw performance), but the gamma issue is a dealbreaker if unfixable.

• For AMD users: How do you manage gamma/color accuracy without per-channel controls?
• For NVIDIA users: How’s your 4070 Ti Super’s 12VHPWR connector holding up? Any close calls?

 

[Lutfij]

If I were in your shoes, I'd get the 9070 XT as well. Check this out;

View: https://youtu.be/lpdDoqDfRhA
IMHO, you should also be tinkering with your display's OSD to achieve the colors you're looking for.


My PSU is a Corsair CX750 RGB (no native 12VHPWR), so I’d need to use the included adapter.
How old is the PSU in your build and what did it power prior to today?

Question: How real is the risk in 2024?
There are yet reports of the connector melting on either the PSU end or the GPU end or both.

 

[Samuel-212]

On PSU Safety for RX 9070 XT:

If I were in your shoes, I'd get the 9070 XT as well. Check this out;

View: https://youtu.be/lpdDoqDfRhA
IMHO, you should also be tinkering with your display's OSD to achieve the colors you're looking for.


My PSU is a Corsair CX750 RGB (no native 12VHPWR), so I’d need to use the included adapter.
How old is the PSU in your build and what did it power prior to today?

Question: How real is the risk in 2024?
There are yet reports of the connector melting on either the PSU end or the GPU end or both.

My Corsair CX750 RGB is 2 years old and previously powered an RTX 3070 + i5-12400F without issues. If I go with the RX 9070 XT (Sapphire Pulse, 750W recommended), my full setup includes:*

• CPU: 65W i5-12400F (no OC)
• Storage: 2x HDDs, 1TB NVMe SSD
• Cooling: 4x fans (no liquid cooling)
  Given the 9070 XT’s ~300W TDP, I’m confident the PSU can handle it—transient spikes should stay within limits. Am I missing something?

My monitor (ASUS VG34VQL3A) has no gamma controls, and color temperature tweaks don’t fix gamma inaccuracies. As you know Color Temp adjusts white balance (e.g., 6500K for sRGB). Gamma controls luminance curve (e.g., 2.2 for standard contrast). Calibrating by using ICC profiles is also useless because most games and even browsers ignore ICC profiles.

 

[JayGau]

There's zero concern about melting connector with the 4070 Ti. If it happened to you, you would be the first person on the planet to get this problem with this GPU.

 

[Samuel-212]

Solved my monitor's mystery, the long story: https://forums.tomshardware.com/threads/update-gamma-black-crush-fixes-final-verdict-solved.3878797/
I ordered RX 9070XT last night, but IMO AMD has to add a gamma slider.