Protein · head-to-head
MyProtein Impact Whey vs Optimum Nutrition Gold Standard.
Our independent head-to-head review of MyProtein Impact Whey Protein Powder and Optimum Nutrition Gold Standard 100% Whey, scored on value, protein density, macros and ingredient quality so you don't have to guess which to buy.


What a scoop actually contains

MyProtein Impact Whey Protein Powder
113 kcal · 30 g scoopProtein is 72% of the scoop
- Protein
- 21.6 g
- (72%)
- Carbs
- 2.7 g
- (9%)
- Fat
- 1.8 g
- (6%)
- Other
- 4.0 g
- (13%)

Optimum Nutrition Gold Standard 100% Whey
112 kcal · 30 g scoopProtein is 79% of the scoop
- Protein
- 23.7 g
- (79%)
- Carbs
- 1.6 g
- (5%)
- Fat
- 1.2 g
- (4%)
- Other
- 3.5 g
- (12%)
WheyWise verdict
MyProtein Impact Whey Protein Powder wins for most buyers.
Runner-upPrefer Optimum Nutrition Gold Standard 100% Whey? It is the second pick here, not a bad one - and Amazon stocks it.
- 72g protein per 100g at roughly half the price of Gold Standard
- Frequent sales push price below £1.40/100g
- Saves £100+ per year versus premium alternatives
How the numbers stack up against the price
MyProtein Impact Whey Protein Powder and Optimum Nutrition Gold Standard 100% Whey represent the two poles of the UK protein market - budget champion versus premium benchmark. MyProtein Impact Whey Protein Powder is a straightforward whey concentrate delivering 72g of protein per 100g at a price that regularly drops below £1.50/100g during sales. Optimum Nutrition Gold Standard 100% Whey is a whey blend of isolate, concentrate, and hydrolysed whey delivering 79g of protein per 100g, backed by decades of global brand trust and the most recognisable name in protein powder.


Cost per 25g protein
Lower is better
Protein per scoop
Higher is better
Carbs per scoop
Lower is better
Fat per scoop
Lower is better
Protein density
Higher is better
WheyWise score
Out of 5
For pure value, MyProtein Impact Whey Protein Powder wins decisively.
You get comparable protein content at roughly half the price per 100g, and the saving adds up fast - potentially £100+ per year if you buy monthly. Optimum Nutrition Gold Standard 100% Whey justifies its premium through consistency, superior taste (Double Rich Chocolate is genuinely excellent), and the reassurance of being the most third-party tested protein on the market. If budget matters most, MyProtein Impact Whey Protein Powder is the clear choice. If you want the best-tasting, most trusted protein regardless of price, Optimum Nutrition Gold Standard 100% Whey has earned its reputation.
Where each one wins

WheyWise pick
Takes cost per 25g protein.

Better on macros
Takes protein per scoop, carbs per scoop, fat per scoop, protein density and the WheyWise score.
Neither of these quite right?
Answer five questions about your goal, budget and diet, and the Protein Finder ranks the whole range against them, with the reason each pick won.