* KOSPI rises, foreigners net sellers

* Korean won strengthens against dollar

* South Korea benchmark bond yield steady

SEOUL, Aug 7 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares rose sharply on Wednesday, led by chipmaker Samsung Electronics which jumped following a Reuters report that its memory chips passed Nvidia's test for use.

** The won strengthened, while the benchmark bond yield was little changed.

** The benchmark KOSPI rose 47.31 points, or 1.88%, to 2,569.46 by 0137 GMT.

** On Tuesday, it jumped 3.3%, recouping some of its sharp losses on Monday.

** Samsung Electronics rose 3.03% after Reuters reported that a version of its fifth-generation high bandwidth memory (HBM) chips has passed Nvidia's tests for use in its artificial intelligence processors.

** Rival SK Hynix, which had practically been an exclusive supplier of high-end memory chips to Nvidia, fell 1.04%.

** Most other index heavyweights rose, including battery makers, e-commerce firms and biopharmaceutical manufacturers.

** Celltrion surged 11.5% after the biopharmaceutical manufacturer reported record-high second quarter revenue.

** Of the total 932 traded issues, 745 shares advanced, while 162 declined.

** Foreigners were net sellers of shares worth 146.0 billion won ($106.1 million).

** The won was quoted at 1,375.1 per dollar on the onshore settlement platform, 0.19% higher than its previous close at 1,377.7.

** In money and debt markets, September futures on three-year treasury bonds rose 0.02 point to 105.93.

** The most liquid three-year Korean treasury bond yield fell by 0.2 basis point to 2.931%, while the benchmark 10-year yield fell by 0.6 bps to 2.989%. ($1 = 1,376.1400 won) (Reporting by Jihoon Lee; Editing by Varun H K)